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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 
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 #define SND_CTL_TLVT_CHMAP_FIXED        0x00101
00187 
00188 #define SND_CTL_TLVT_CHMAP_VAR          0x00102
00189 
00190 #define SND_CTL_TLVT_CHMAP_PAIRED       0x00103
00191 
00193 typedef enum _snd_ctl_type {
00195         SND_CTL_TYPE_HW,
00197         SND_CTL_TYPE_SHM,
00199         SND_CTL_TYPE_INET,
00201         SND_CTL_TYPE_EXT
00202 } snd_ctl_type_t;
00203 
00205 #define SND_CTL_NONBLOCK                0x0001
00206 
00208 #define SND_CTL_ASYNC                   0x0002
00209 
00211 #define SND_CTL_READONLY                0x0004
00212 
00214 typedef struct _snd_ctl snd_ctl_t;
00215 
00217 #define SND_SCTL_NOFREE                 0x0001
00218 
00220 typedef struct _snd_sctl snd_sctl_t;
00221 
00222 int snd_card_load(int card);
00223 int snd_card_next(int *card);
00224 int snd_card_get_index(const char *name);
00225 int snd_card_get_name(int card, char **name);
00226 int snd_card_get_longname(int card, char **name);
00227 
00228 int snd_device_name_hint(int card, const char *iface, void ***hints);
00229 int snd_device_name_free_hint(void **hints);
00230 char *snd_device_name_get_hint(const void *hint, const char *id);
00231 
00232 int snd_ctl_open(snd_ctl_t **ctl, const char *name, int mode);
00233 int snd_ctl_open_lconf(snd_ctl_t **ctl, const char *name, int mode, snd_config_t *lconf);
00234 int snd_ctl_open_fallback(snd_ctl_t **ctl, snd_config_t *root, const char *name, const char *orig_name, int mode);
00235 int snd_ctl_close(snd_ctl_t *ctl);
00236 int snd_ctl_nonblock(snd_ctl_t *ctl, int nonblock);
00237 static __inline__ int snd_ctl_abort(snd_ctl_t *ctl) { return snd_ctl_nonblock(ctl, 2); }
00238 int snd_async_add_ctl_handler(snd_async_handler_t **handler, snd_ctl_t *ctl, 
00239                               snd_async_callback_t callback, void *private_data);
00240 snd_ctl_t *snd_async_handler_get_ctl(snd_async_handler_t *handler);
00241 int snd_ctl_poll_descriptors_count(snd_ctl_t *ctl);
00242 int snd_ctl_poll_descriptors(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int space);
00243 int snd_ctl_poll_descriptors_revents(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
00244 int snd_ctl_subscribe_events(snd_ctl_t *ctl, int subscribe);
00245 int snd_ctl_card_info(snd_ctl_t *ctl, snd_ctl_card_info_t *info);
00246 int snd_ctl_elem_list(snd_ctl_t *ctl, snd_ctl_elem_list_t *list);
00247 int snd_ctl_elem_info(snd_ctl_t *ctl, snd_ctl_elem_info_t *info);
00248 int snd_ctl_elem_read(snd_ctl_t *ctl, snd_ctl_elem_value_t *data);
00249 int snd_ctl_elem_write(snd_ctl_t *ctl, snd_ctl_elem_value_t *data);
00250 int snd_ctl_elem_lock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
00251 int snd_ctl_elem_unlock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
00252 int snd_ctl_elem_tlv_read(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00253                           unsigned int *tlv, unsigned int tlv_size);
00254 int snd_ctl_elem_tlv_write(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00255                            const unsigned int *tlv);
00256 int snd_ctl_elem_tlv_command(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00257                              const unsigned int *tlv);
00258 #ifdef __ALSA_HWDEP_H
00259 int snd_ctl_hwdep_next_device(snd_ctl_t *ctl, int * device);
00260 int snd_ctl_hwdep_info(snd_ctl_t *ctl, snd_hwdep_info_t * info);
00261 #endif
00262 #ifdef __ALSA_PCM_H
00263 int snd_ctl_pcm_next_device(snd_ctl_t *ctl, int *device);
00264 int snd_ctl_pcm_info(snd_ctl_t *ctl, snd_pcm_info_t * info);
00265 int snd_ctl_pcm_prefer_subdevice(snd_ctl_t *ctl, int subdev);
00266 #endif
00267 #ifdef __ALSA_RAWMIDI_H
00268 int snd_ctl_rawmidi_next_device(snd_ctl_t *ctl, int * device);
00269 int snd_ctl_rawmidi_info(snd_ctl_t *ctl, snd_rawmidi_info_t * info);
00270 int snd_ctl_rawmidi_prefer_subdevice(snd_ctl_t *ctl, int subdev);
00271 #endif
00272 int snd_ctl_set_power_state(snd_ctl_t *ctl, unsigned int state);
00273 int snd_ctl_get_power_state(snd_ctl_t *ctl, unsigned int *state);
00274 
00275 int snd_ctl_read(snd_ctl_t *ctl, snd_ctl_event_t *event);
00276 int snd_ctl_wait(snd_ctl_t *ctl, int timeout);
00277 const char *snd_ctl_name(snd_ctl_t *ctl);
00278 snd_ctl_type_t snd_ctl_type(snd_ctl_t *ctl);
00279 
00280 const char *snd_ctl_elem_type_name(snd_ctl_elem_type_t type);
00281 const char *snd_ctl_elem_iface_name(snd_ctl_elem_iface_t iface);
00282 const char *snd_ctl_event_type_name(snd_ctl_event_type_t type);
00283 
00284 unsigned int snd_ctl_event_elem_get_mask(const snd_ctl_event_t *obj);
00285 unsigned int snd_ctl_event_elem_get_numid(const snd_ctl_event_t *obj);
00286 void snd_ctl_event_elem_get_id(const snd_ctl_event_t *obj, snd_ctl_elem_id_t *ptr);
00287 snd_ctl_elem_iface_t snd_ctl_event_elem_get_interface(const snd_ctl_event_t *obj);
00288 unsigned int snd_ctl_event_elem_get_device(const snd_ctl_event_t *obj);
00289 unsigned int snd_ctl_event_elem_get_subdevice(const snd_ctl_event_t *obj);
00290 const char *snd_ctl_event_elem_get_name(const snd_ctl_event_t *obj);
00291 unsigned int snd_ctl_event_elem_get_index(const snd_ctl_event_t *obj);
00292 
00293 int snd_ctl_elem_list_alloc_space(snd_ctl_elem_list_t *obj, unsigned int entries);
00294 void snd_ctl_elem_list_free_space(snd_ctl_elem_list_t *obj);
00295 
00296 char *snd_ctl_ascii_elem_id_get(snd_ctl_elem_id_t *id);
00297 int snd_ctl_ascii_elem_id_parse(snd_ctl_elem_id_t *dst, const char *str);
00298 int snd_ctl_ascii_value_parse(snd_ctl_t *handle,
00299                               snd_ctl_elem_value_t *dst,
00300                               snd_ctl_elem_info_t *info,
00301                               const char *value);
00302 
00303 size_t snd_ctl_elem_id_sizeof(void);
00308 #define snd_ctl_elem_id_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_id)
00309 int snd_ctl_elem_id_malloc(snd_ctl_elem_id_t **ptr);
00310 void snd_ctl_elem_id_free(snd_ctl_elem_id_t *obj);
00311 void snd_ctl_elem_id_clear(snd_ctl_elem_id_t *obj);
00312 void snd_ctl_elem_id_copy(snd_ctl_elem_id_t *dst, const snd_ctl_elem_id_t *src);
00313 unsigned int snd_ctl_elem_id_get_numid(const snd_ctl_elem_id_t *obj);
00314 snd_ctl_elem_iface_t snd_ctl_elem_id_get_interface(const snd_ctl_elem_id_t *obj);
00315 unsigned int snd_ctl_elem_id_get_device(const snd_ctl_elem_id_t *obj);
00316 unsigned int snd_ctl_elem_id_get_subdevice(const snd_ctl_elem_id_t *obj);
00317 const char *snd_ctl_elem_id_get_name(const snd_ctl_elem_id_t *obj);
00318 unsigned int snd_ctl_elem_id_get_index(const snd_ctl_elem_id_t *obj);
00319 void snd_ctl_elem_id_set_numid(snd_ctl_elem_id_t *obj, unsigned int val);
00320 void snd_ctl_elem_id_set_interface(snd_ctl_elem_id_t *obj, snd_ctl_elem_iface_t val);
00321 void snd_ctl_elem_id_set_device(snd_ctl_elem_id_t *obj, unsigned int val);
00322 void snd_ctl_elem_id_set_subdevice(snd_ctl_elem_id_t *obj, unsigned int val);
00323 void snd_ctl_elem_id_set_name(snd_ctl_elem_id_t *obj, const char *val);
00324 void snd_ctl_elem_id_set_index(snd_ctl_elem_id_t *obj, unsigned int val);
00325 
00326 size_t snd_ctl_card_info_sizeof(void);
00331 #define snd_ctl_card_info_alloca(ptr) __snd_alloca(ptr, snd_ctl_card_info)
00332 int snd_ctl_card_info_malloc(snd_ctl_card_info_t **ptr);
00333 void snd_ctl_card_info_free(snd_ctl_card_info_t *obj);
00334 void snd_ctl_card_info_clear(snd_ctl_card_info_t *obj);
00335 void snd_ctl_card_info_copy(snd_ctl_card_info_t *dst, const snd_ctl_card_info_t *src);
00336 int snd_ctl_card_info_get_card(const snd_ctl_card_info_t *obj);
00337 const char *snd_ctl_card_info_get_id(const snd_ctl_card_info_t *obj);
00338 const char *snd_ctl_card_info_get_driver(const snd_ctl_card_info_t *obj);
00339 const char *snd_ctl_card_info_get_name(const snd_ctl_card_info_t *obj);
00340 const char *snd_ctl_card_info_get_longname(const snd_ctl_card_info_t *obj);
00341 const char *snd_ctl_card_info_get_mixername(const snd_ctl_card_info_t *obj);
00342 const char *snd_ctl_card_info_get_components(const snd_ctl_card_info_t *obj);
00343 
00344 size_t snd_ctl_event_sizeof(void);
00349 #define snd_ctl_event_alloca(ptr) __snd_alloca(ptr, snd_ctl_event)
00350 int snd_ctl_event_malloc(snd_ctl_event_t **ptr);
00351 void snd_ctl_event_free(snd_ctl_event_t *obj);
00352 void snd_ctl_event_clear(snd_ctl_event_t *obj);
00353 void snd_ctl_event_copy(snd_ctl_event_t *dst, const snd_ctl_event_t *src);
00354 snd_ctl_event_type_t snd_ctl_event_get_type(const snd_ctl_event_t *obj);
00355 
00356 size_t snd_ctl_elem_list_sizeof(void);
00361 #define snd_ctl_elem_list_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_list)
00362 int snd_ctl_elem_list_malloc(snd_ctl_elem_list_t **ptr);
00363 void snd_ctl_elem_list_free(snd_ctl_elem_list_t *obj);
00364 void snd_ctl_elem_list_clear(snd_ctl_elem_list_t *obj);
00365 void snd_ctl_elem_list_copy(snd_ctl_elem_list_t *dst, const snd_ctl_elem_list_t *src);
00366 void snd_ctl_elem_list_set_offset(snd_ctl_elem_list_t *obj, unsigned int val);
00367 unsigned int snd_ctl_elem_list_get_used(const snd_ctl_elem_list_t *obj);
00368 unsigned int snd_ctl_elem_list_get_count(const snd_ctl_elem_list_t *obj);
00369 void snd_ctl_elem_list_get_id(const snd_ctl_elem_list_t *obj, unsigned int idx, snd_ctl_elem_id_t *ptr);
00370 unsigned int snd_ctl_elem_list_get_numid(const snd_ctl_elem_list_t *obj, unsigned int idx);
00371 snd_ctl_elem_iface_t snd_ctl_elem_list_get_interface(const snd_ctl_elem_list_t *obj, unsigned int idx);
00372 unsigned int snd_ctl_elem_list_get_device(const snd_ctl_elem_list_t *obj, unsigned int idx);
00373 unsigned int snd_ctl_elem_list_get_subdevice(const snd_ctl_elem_list_t *obj, unsigned int idx);
00374 const char *snd_ctl_elem_list_get_name(const snd_ctl_elem_list_t *obj, unsigned int idx);
00375 unsigned int snd_ctl_elem_list_get_index(const snd_ctl_elem_list_t *obj, unsigned int idx);
00376 
00377 size_t snd_ctl_elem_info_sizeof(void);
00382 #define snd_ctl_elem_info_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_info)
00383 int snd_ctl_elem_info_malloc(snd_ctl_elem_info_t **ptr);
00384 void snd_ctl_elem_info_free(snd_ctl_elem_info_t *obj);
00385 void snd_ctl_elem_info_clear(snd_ctl_elem_info_t *obj);
00386 void snd_ctl_elem_info_copy(snd_ctl_elem_info_t *dst, const snd_ctl_elem_info_t *src);
00387 snd_ctl_elem_type_t snd_ctl_elem_info_get_type(const snd_ctl_elem_info_t *obj);
00388 int snd_ctl_elem_info_is_readable(const snd_ctl_elem_info_t *obj);
00389 int snd_ctl_elem_info_is_writable(const snd_ctl_elem_info_t *obj);
00390 int snd_ctl_elem_info_is_volatile(const snd_ctl_elem_info_t *obj);
00391 int snd_ctl_elem_info_is_inactive(const snd_ctl_elem_info_t *obj);
00392 int snd_ctl_elem_info_is_locked(const snd_ctl_elem_info_t *obj);
00393 int snd_ctl_elem_info_is_tlv_readable(const snd_ctl_elem_info_t *obj);
00394 int snd_ctl_elem_info_is_tlv_writable(const snd_ctl_elem_info_t *obj);
00395 int snd_ctl_elem_info_is_tlv_commandable(const snd_ctl_elem_info_t *obj);
00396 int snd_ctl_elem_info_is_owner(const snd_ctl_elem_info_t *obj);
00397 int snd_ctl_elem_info_is_user(const snd_ctl_elem_info_t *obj);
00398 pid_t snd_ctl_elem_info_get_owner(const snd_ctl_elem_info_t *obj);
00399 unsigned int snd_ctl_elem_info_get_count(const snd_ctl_elem_info_t *obj);
00400 long snd_ctl_elem_info_get_min(const snd_ctl_elem_info_t *obj);
00401 long snd_ctl_elem_info_get_max(const snd_ctl_elem_info_t *obj);
00402 long snd_ctl_elem_info_get_step(const snd_ctl_elem_info_t *obj);
00403 long long snd_ctl_elem_info_get_min64(const snd_ctl_elem_info_t *obj);
00404 long long snd_ctl_elem_info_get_max64(const snd_ctl_elem_info_t *obj);
00405 long long snd_ctl_elem_info_get_step64(const snd_ctl_elem_info_t *obj);
00406 unsigned int snd_ctl_elem_info_get_items(const snd_ctl_elem_info_t *obj);
00407 void snd_ctl_elem_info_set_item(snd_ctl_elem_info_t *obj, unsigned int val);
00408 const char *snd_ctl_elem_info_get_item_name(const snd_ctl_elem_info_t *obj);
00409 int snd_ctl_elem_info_get_dimensions(const snd_ctl_elem_info_t *obj);
00410 int snd_ctl_elem_info_get_dimension(const snd_ctl_elem_info_t *obj, unsigned int idx);
00411 int snd_ctl_elem_info_set_dimension(snd_ctl_elem_info_t *info,
00412                                     const int dimension[4]);
00413 void snd_ctl_elem_info_get_id(const snd_ctl_elem_info_t *obj, snd_ctl_elem_id_t *ptr);
00414 unsigned int snd_ctl_elem_info_get_numid(const snd_ctl_elem_info_t *obj);
00415 snd_ctl_elem_iface_t snd_ctl_elem_info_get_interface(const snd_ctl_elem_info_t *obj);
00416 unsigned int snd_ctl_elem_info_get_device(const snd_ctl_elem_info_t *obj);
00417 unsigned int snd_ctl_elem_info_get_subdevice(const snd_ctl_elem_info_t *obj);
00418 const char *snd_ctl_elem_info_get_name(const snd_ctl_elem_info_t *obj);
00419 unsigned int snd_ctl_elem_info_get_index(const snd_ctl_elem_info_t *obj);
00420 void snd_ctl_elem_info_set_id(snd_ctl_elem_info_t *obj, const snd_ctl_elem_id_t *ptr);
00421 void snd_ctl_elem_info_set_numid(snd_ctl_elem_info_t *obj, unsigned int val);
00422 void snd_ctl_elem_info_set_interface(snd_ctl_elem_info_t *obj, snd_ctl_elem_iface_t val);
00423 void snd_ctl_elem_info_set_device(snd_ctl_elem_info_t *obj, unsigned int val);
00424 void snd_ctl_elem_info_set_subdevice(snd_ctl_elem_info_t *obj, unsigned int val);
00425 void snd_ctl_elem_info_set_name(snd_ctl_elem_info_t *obj, const char *val);
00426 void snd_ctl_elem_info_set_index(snd_ctl_elem_info_t *obj, unsigned int val);
00427 
00428 int snd_ctl_add_integer_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
00429                                  unsigned int element_count,
00430                                  unsigned int member_count,
00431                                  long min, long max, long step);
00432 int snd_ctl_add_integer64_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
00433                                    unsigned int element_count,
00434                                    unsigned int member_count,
00435                                    long long min, long long max,
00436                                    long long step);
00437 int snd_ctl_add_boolean_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
00438                                  unsigned int element_count,
00439                                  unsigned int member_count);
00440 int snd_ctl_add_enumerated_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
00441                                     unsigned int element_count,
00442                                     unsigned int member_count,
00443                                     unsigned int items,
00444                                     const char *const labels[]);
00445 int snd_ctl_add_bytes_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
00446                                unsigned int element_count,
00447                                unsigned int member_count);
00448 
00449 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);
00450 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);
00451 int snd_ctl_elem_add_boolean(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count);
00452 int snd_ctl_elem_add_enumerated(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count, unsigned int items, const char *const names[]);
00453 int snd_ctl_elem_add_iec958(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id);
00454 int snd_ctl_elem_remove(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
00455 
00456 size_t snd_ctl_elem_value_sizeof(void);
00461 #define snd_ctl_elem_value_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_value)
00462 int snd_ctl_elem_value_malloc(snd_ctl_elem_value_t **ptr);
00463 void snd_ctl_elem_value_free(snd_ctl_elem_value_t *obj);
00464 void snd_ctl_elem_value_clear(snd_ctl_elem_value_t *obj);
00465 void snd_ctl_elem_value_copy(snd_ctl_elem_value_t *dst, const snd_ctl_elem_value_t *src);
00466 int snd_ctl_elem_value_compare(snd_ctl_elem_value_t *left, const snd_ctl_elem_value_t *right);
00467 void snd_ctl_elem_value_get_id(const snd_ctl_elem_value_t *obj, snd_ctl_elem_id_t *ptr);
00468 unsigned int snd_ctl_elem_value_get_numid(const snd_ctl_elem_value_t *obj);
00469 snd_ctl_elem_iface_t snd_ctl_elem_value_get_interface(const snd_ctl_elem_value_t *obj);
00470 unsigned int snd_ctl_elem_value_get_device(const snd_ctl_elem_value_t *obj);
00471 unsigned int snd_ctl_elem_value_get_subdevice(const snd_ctl_elem_value_t *obj);
00472 const char *snd_ctl_elem_value_get_name(const snd_ctl_elem_value_t *obj);
00473 unsigned int snd_ctl_elem_value_get_index(const snd_ctl_elem_value_t *obj);
00474 void snd_ctl_elem_value_set_id(snd_ctl_elem_value_t *obj, const snd_ctl_elem_id_t *ptr);
00475 void snd_ctl_elem_value_set_numid(snd_ctl_elem_value_t *obj, unsigned int val);
00476 void snd_ctl_elem_value_set_interface(snd_ctl_elem_value_t *obj, snd_ctl_elem_iface_t val);
00477 void snd_ctl_elem_value_set_device(snd_ctl_elem_value_t *obj, unsigned int val);
00478 void snd_ctl_elem_value_set_subdevice(snd_ctl_elem_value_t *obj, unsigned int val);
00479 void snd_ctl_elem_value_set_name(snd_ctl_elem_value_t *obj, const char *val);
00480 void snd_ctl_elem_value_set_index(snd_ctl_elem_value_t *obj, unsigned int val);
00481 int snd_ctl_elem_value_get_boolean(const snd_ctl_elem_value_t *obj, unsigned int idx);
00482 long snd_ctl_elem_value_get_integer(const snd_ctl_elem_value_t *obj, unsigned int idx);
00483 long long snd_ctl_elem_value_get_integer64(const snd_ctl_elem_value_t *obj, unsigned int idx);
00484 unsigned int snd_ctl_elem_value_get_enumerated(const snd_ctl_elem_value_t *obj, unsigned int idx);
00485 unsigned char snd_ctl_elem_value_get_byte(const snd_ctl_elem_value_t *obj, unsigned int idx);
00486 void snd_ctl_elem_value_set_boolean(snd_ctl_elem_value_t *obj, unsigned int idx, long val);
00487 void snd_ctl_elem_value_set_integer(snd_ctl_elem_value_t *obj, unsigned int idx, long val);
00488 void snd_ctl_elem_value_set_integer64(snd_ctl_elem_value_t *obj, unsigned int idx, long long val);
00489 void snd_ctl_elem_value_set_enumerated(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned int val);
00490 void snd_ctl_elem_value_set_byte(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned char val);
00491 void snd_ctl_elem_set_bytes(snd_ctl_elem_value_t *obj, void *data, size_t size);
00492 const void * snd_ctl_elem_value_get_bytes(const snd_ctl_elem_value_t *obj);
00493 void snd_ctl_elem_value_get_iec958(const snd_ctl_elem_value_t *obj, snd_aes_iec958_t *ptr);
00494 void snd_ctl_elem_value_set_iec958(snd_ctl_elem_value_t *obj, const snd_aes_iec958_t *ptr);
00495 
00496 int snd_tlv_parse_dB_info(unsigned int *tlv, unsigned int tlv_size,
00497                           unsigned int **db_tlvp);
00498 int snd_tlv_get_dB_range(unsigned int *tlv, long rangemin, long rangemax,
00499                          long *min, long *max);
00500 int snd_tlv_convert_to_dB(unsigned int *tlv, long rangemin, long rangemax,
00501                           long volume, long *db_gain);
00502 int snd_tlv_convert_from_dB(unsigned int *tlv, long rangemin, long rangemax,
00503                             long db_gain, long *value, int xdir);
00504 int snd_ctl_get_dB_range(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00505                          long *min, long *max);
00506 int snd_ctl_convert_to_dB(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00507                           long volume, long *db_gain);
00508 int snd_ctl_convert_from_dB(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
00509                             long db_gain, long *value, int xdir);
00510 
00520 typedef struct _snd_hctl_elem snd_hctl_elem_t;
00521 
00523 typedef struct _snd_hctl snd_hctl_t;
00524 
00531 typedef int (*snd_hctl_compare_t)(const snd_hctl_elem_t *e1,
00532                                   const snd_hctl_elem_t *e2);
00533 int snd_hctl_compare_fast(const snd_hctl_elem_t *c1,
00534                           const snd_hctl_elem_t *c2);
00542 typedef int (*snd_hctl_callback_t)(snd_hctl_t *hctl,
00543                                    unsigned int mask,
00544                                    snd_hctl_elem_t *elem);
00551 typedef int (*snd_hctl_elem_callback_t)(snd_hctl_elem_t *elem,
00552                                         unsigned int mask);
00553 
00554 int snd_hctl_open(snd_hctl_t **hctl, const char *name, int mode);
00555 int snd_hctl_open_ctl(snd_hctl_t **hctlp, snd_ctl_t *ctl);
00556 int snd_hctl_close(snd_hctl_t *hctl);
00557 int snd_hctl_nonblock(snd_hctl_t *hctl, int nonblock);
00558 static __inline__ int snd_hctl_abort(snd_hctl_t *hctl) { return snd_hctl_nonblock(hctl, 2); }
00559 int snd_hctl_poll_descriptors_count(snd_hctl_t *hctl);
00560 int snd_hctl_poll_descriptors(snd_hctl_t *hctl, struct pollfd *pfds, unsigned int space);
00561 int snd_hctl_poll_descriptors_revents(snd_hctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
00562 unsigned int snd_hctl_get_count(snd_hctl_t *hctl);
00563 int snd_hctl_set_compare(snd_hctl_t *hctl, snd_hctl_compare_t hsort);
00564 snd_hctl_elem_t *snd_hctl_first_elem(snd_hctl_t *hctl);
00565 snd_hctl_elem_t *snd_hctl_last_elem(snd_hctl_t *hctl);
00566 snd_hctl_elem_t *snd_hctl_find_elem(snd_hctl_t *hctl, const snd_ctl_elem_id_t *id);
00567 void snd_hctl_set_callback(snd_hctl_t *hctl, snd_hctl_callback_t callback);
00568 void snd_hctl_set_callback_private(snd_hctl_t *hctl, void *data);
00569 void *snd_hctl_get_callback_private(snd_hctl_t *hctl);
00570 int snd_hctl_load(snd_hctl_t *hctl);
00571 int snd_hctl_free(snd_hctl_t *hctl);
00572 int snd_hctl_handle_events(snd_hctl_t *hctl);
00573 const char *snd_hctl_name(snd_hctl_t *hctl);
00574 int snd_hctl_wait(snd_hctl_t *hctl, int timeout);
00575 snd_ctl_t *snd_hctl_ctl(snd_hctl_t *hctl);
00576 
00577 snd_hctl_elem_t *snd_hctl_elem_next(snd_hctl_elem_t *elem);
00578 snd_hctl_elem_t *snd_hctl_elem_prev(snd_hctl_elem_t *elem);
00579 int snd_hctl_elem_info(snd_hctl_elem_t *elem, snd_ctl_elem_info_t * info);
00580 int snd_hctl_elem_read(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value);
00581 int snd_hctl_elem_write(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value);
00582 int snd_hctl_elem_tlv_read(snd_hctl_elem_t *elem, unsigned int *tlv, unsigned int tlv_size);
00583 int snd_hctl_elem_tlv_write(snd_hctl_elem_t *elem, const unsigned int *tlv);
00584 int snd_hctl_elem_tlv_command(snd_hctl_elem_t *elem, const unsigned int *tlv);
00585 
00586 snd_hctl_t *snd_hctl_elem_get_hctl(snd_hctl_elem_t *elem);
00587 
00588 void snd_hctl_elem_get_id(const snd_hctl_elem_t *obj, snd_ctl_elem_id_t *ptr);
00589 unsigned int snd_hctl_elem_get_numid(const snd_hctl_elem_t *obj);
00590 snd_ctl_elem_iface_t snd_hctl_elem_get_interface(const snd_hctl_elem_t *obj);
00591 unsigned int snd_hctl_elem_get_device(const snd_hctl_elem_t *obj);
00592 unsigned int snd_hctl_elem_get_subdevice(const snd_hctl_elem_t *obj);
00593 const char *snd_hctl_elem_get_name(const snd_hctl_elem_t *obj);
00594 unsigned int snd_hctl_elem_get_index(const snd_hctl_elem_t *obj);
00595 void snd_hctl_elem_set_callback(snd_hctl_elem_t *obj, snd_hctl_elem_callback_t val);
00596 void * snd_hctl_elem_get_callback_private(const snd_hctl_elem_t *obj);
00597 void snd_hctl_elem_set_callback_private(snd_hctl_elem_t *obj, void * val);
00598 
00610 int snd_sctl_build(snd_sctl_t **ctl, snd_ctl_t *handle, snd_config_t *config,
00611                    snd_config_t *private_data, int mode);
00612 int snd_sctl_free(snd_sctl_t *handle);
00613 int snd_sctl_install(snd_sctl_t *handle);
00614 int snd_sctl_remove(snd_sctl_t *handle);
00615 
00618 #ifdef __cplusplus
00619 }
00620 #endif
00621 
00622 #endif /* __ALSA_CONTROL_H */
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