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# /builddir/build/BUILD/alsa-lib-1.1.0/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
    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 *value);
    00249 int snd_ctl_elem_write(snd_ctl_t *ctl, snd_ctl_elem_value_t *value);
    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 void snd_ctl_elem_info_get_id(const snd_ctl_elem_info_t *obj, snd_ctl_elem_id_t *ptr);
    00412 unsigned int snd_ctl_elem_info_get_numid(const snd_ctl_elem_info_t *obj);
    00413 snd_ctl_elem_iface_t snd_ctl_elem_info_get_interface(const snd_ctl_elem_info_t *obj);
    00414 unsigned int snd_ctl_elem_info_get_device(const snd_ctl_elem_info_t *obj);
    00415 unsigned int snd_ctl_elem_info_get_subdevice(const snd_ctl_elem_info_t *obj);
    00416 const char *snd_ctl_elem_info_get_name(const snd_ctl_elem_info_t *obj);
    00417 unsigned int snd_ctl_elem_info_get_index(const snd_ctl_elem_info_t *obj);
    00418 void snd_ctl_elem_info_set_id(snd_ctl_elem_info_t *obj, const snd_ctl_elem_id_t *ptr);
    00419 void snd_ctl_elem_info_set_numid(snd_ctl_elem_info_t *obj, unsigned int val);
    00420 void snd_ctl_elem_info_set_interface(snd_ctl_elem_info_t *obj, snd_ctl_elem_iface_t val);
    00421 void snd_ctl_elem_info_set_device(snd_ctl_elem_info_t *obj, unsigned int val);
    00422 void snd_ctl_elem_info_set_subdevice(snd_ctl_elem_info_t *obj, unsigned int val);
    00423 void snd_ctl_elem_info_set_name(snd_ctl_elem_info_t *obj, const char *val);
    00424 void snd_ctl_elem_info_set_index(snd_ctl_elem_info_t *obj, unsigned int val);
    00425
    00426 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);
    00427 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);
    00428 int snd_ctl_elem_add_boolean(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count);
    00429 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[]);
    00430 int snd_ctl_elem_add_iec958(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id);
    00431 int snd_ctl_elem_remove(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
    00432
    00433 size_t snd_ctl_elem_value_sizeof(void);
    00438 #define snd_ctl_elem_value_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_value)
    00439 int snd_ctl_elem_value_malloc(snd_ctl_elem_value_t **ptr);
    00440 void snd_ctl_elem_value_free(snd_ctl_elem_value_t *obj);
    00441 void snd_ctl_elem_value_clear(snd_ctl_elem_value_t *obj);
    00442 void snd_ctl_elem_value_copy(snd_ctl_elem_value_t *dst, const snd_ctl_elem_value_t *src);
    00443 int snd_ctl_elem_value_compare(snd_ctl_elem_value_t *left, const snd_ctl_elem_value_t *right);
    00444 void snd_ctl_elem_value_get_id(const snd_ctl_elem_value_t *obj, snd_ctl_elem_id_t *ptr);
    00445 unsigned int snd_ctl_elem_value_get_numid(const snd_ctl_elem_value_t *obj);
    00446 snd_ctl_elem_iface_t snd_ctl_elem_value_get_interface(const snd_ctl_elem_value_t *obj);
    00447 unsigned int snd_ctl_elem_value_get_device(const snd_ctl_elem_value_t *obj);
    00448 unsigned int snd_ctl_elem_value_get_subdevice(const snd_ctl_elem_value_t *obj);
    00449 const char *snd_ctl_elem_value_get_name(const snd_ctl_elem_value_t *obj);
    00450 unsigned int snd_ctl_elem_value_get_index(const snd_ctl_elem_value_t *obj);
    00451 void snd_ctl_elem_value_set_id(snd_ctl_elem_value_t *obj, const snd_ctl_elem_id_t *ptr);
    00452 void snd_ctl_elem_value_set_numid(snd_ctl_elem_value_t *obj, unsigned int val);
    00453 void snd_ctl_elem_value_set_interface(snd_ctl_elem_value_t *obj, snd_ctl_elem_iface_t val);
    00454 void snd_ctl_elem_value_set_device(snd_ctl_elem_value_t *obj, unsigned int val);
    00455 void snd_ctl_elem_value_set_subdevice(snd_ctl_elem_value_t *obj, unsigned int val);
    00456 void snd_ctl_elem_value_set_name(snd_ctl_elem_value_t *obj, const char *val);
    00457 void snd_ctl_elem_value_set_index(snd_ctl_elem_value_t *obj, unsigned int val);
    00458 int snd_ctl_elem_value_get_boolean(const snd_ctl_elem_value_t *obj, unsigned int idx);
    00459 long snd_ctl_elem_value_get_integer(const snd_ctl_elem_value_t *obj, unsigned int idx);
    00460 long long snd_ctl_elem_value_get_integer64(const snd_ctl_elem_value_t *obj, unsigned int idx);
    00461 unsigned int snd_ctl_elem_value_get_enumerated(const snd_ctl_elem_value_t *obj, unsigned int idx);
    00462 unsigned char snd_ctl_elem_value_get_byte(const snd_ctl_elem_value_t *obj, unsigned int idx);
    00463 void snd_ctl_elem_value_set_boolean(snd_ctl_elem_value_t *obj, unsigned int idx, long val);
    00464 void snd_ctl_elem_value_set_integer(snd_ctl_elem_value_t *obj, unsigned int idx, long val);
    00465 void snd_ctl_elem_value_set_integer64(snd_ctl_elem_value_t *obj, unsigned int idx, long long val);
    00466 void snd_ctl_elem_value_set_enumerated(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned int val);
    00467 void snd_ctl_elem_value_set_byte(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned char val);
    00468 void snd_ctl_elem_set_bytes(snd_ctl_elem_value_t *obj, void *data, size_t size);
    00469 const void * snd_ctl_elem_value_get_bytes(const snd_ctl_elem_value_t *obj);
    00470 void snd_ctl_elem_value_get_iec958(const snd_ctl_elem_value_t *obj, snd_aes_iec958_t *ptr);
    00471 void snd_ctl_elem_value_set_iec958(snd_ctl_elem_value_t *obj, const snd_aes_iec958_t *ptr);
    00472
    00473 int snd_tlv_parse_dB_info(unsigned int *tlv, unsigned int tlv_size,
    00474                           unsigned int **db_tlvp);
    00475 int snd_tlv_get_dB_range(unsigned int *tlv, long rangemin, long rangemax,
    00476                          long *min, long *max);
    00477 int snd_tlv_convert_to_dB(unsigned int *tlv, long rangemin, long rangemax,
    00478                           long volume, long *db_gain);
    00479 int snd_tlv_convert_from_dB(unsigned int *tlv, long rangemin, long rangemax,
    00480                             long db_gain, long *value, int xdir);
    00481 int snd_ctl_get_dB_range(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
    00482                          long *min, long *max);
    00483 int snd_ctl_convert_to_dB(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
    00484                           long volume, long *db_gain);
    00485 int snd_ctl_convert_from_dB(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
    00486                             long db_gain, long *value, int xdir);
    00487
    00497 typedef struct _snd_hctl_elem snd_hctl_elem_t;
    00498
    00500 typedef struct _snd_hctl snd_hctl_t;
    00501
    00508 typedef int (*snd_hctl_compare_t)(const snd_hctl_elem_t *e1,
    00509                                   const snd_hctl_elem_t *e2);
    00510 int snd_hctl_compare_fast(const snd_hctl_elem_t *c1,
    00511                           const snd_hctl_elem_t *c2);
    00519 typedef int (*snd_hctl_callback_t)(snd_hctl_t *hctl,
    00520                                    unsigned int mask,
    00521                                    snd_hctl_elem_t *elem);
    00528 typedef int (*snd_hctl_elem_callback_t)(snd_hctl_elem_t *elem,
    00529                                         unsigned int mask);
    00530
    00531 int snd_hctl_open(snd_hctl_t **hctl, const char *name, int mode);
    00532 int snd_hctl_open_ctl(snd_hctl_t **hctlp, snd_ctl_t *ctl);
    00533 int snd_hctl_close(snd_hctl_t *hctl);
    00534 int snd_hctl_nonblock(snd_hctl_t *hctl, int nonblock);
    00535 static __inline__ int snd_hctl_abort(snd_hctl_t *hctl) { return snd_hctl_nonblock(hctl, 2); }
    00536 int snd_hctl_poll_descriptors_count(snd_hctl_t *hctl);
    00537 int snd_hctl_poll_descriptors(snd_hctl_t *hctl, struct pollfd *pfds, unsigned int space);
    00538 int snd_hctl_poll_descriptors_revents(snd_hctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
    00539 unsigned int snd_hctl_get_count(snd_hctl_t *hctl);
    00540 int snd_hctl_set_compare(snd_hctl_t *hctl, snd_hctl_compare_t hsort);
    00541 snd_hctl_elem_t *snd_hctl_first_elem(snd_hctl_t *hctl);
    00542 snd_hctl_elem_t *snd_hctl_last_elem(snd_hctl_t *hctl);
    00543 snd_hctl_elem_t *snd_hctl_find_elem(snd_hctl_t *hctl, const snd_ctl_elem_id_t *id);
    00544 void snd_hctl_set_callback(snd_hctl_t *hctl, snd_hctl_callback_t callback);
    00545 void snd_hctl_set_callback_private(snd_hctl_t *hctl, void *data);
    00546 void *snd_hctl_get_callback_private(snd_hctl_t *hctl);
    00547 int snd_hctl_load(snd_hctl_t *hctl);
    00548 int snd_hctl_free(snd_hctl_t *hctl);
    00549 int snd_hctl_handle_events(snd_hctl_t *hctl);
    00550 const char *snd_hctl_name(snd_hctl_t *hctl);
    00551 int snd_hctl_wait(snd_hctl_t *hctl, int timeout);
    00552 snd_ctl_t *snd_hctl_ctl(snd_hctl_t *hctl);
    00553
    00554 snd_hctl_elem_t *snd_hctl_elem_next(snd_hctl_elem_t *elem);
    00555 snd_hctl_elem_t *snd_hctl_elem_prev(snd_hctl_elem_t *elem);
    00556 int snd_hctl_elem_info(snd_hctl_elem_t *elem, snd_ctl_elem_info_t * info);
    00557 int snd_hctl_elem_read(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value);
    00558 int snd_hctl_elem_write(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value);
    00559 int snd_hctl_elem_tlv_read(snd_hctl_elem_t *elem, unsigned int *tlv, unsigned int tlv_size);
    00560 int snd_hctl_elem_tlv_write(snd_hctl_elem_t *elem, const unsigned int *tlv);
    00561 int snd_hctl_elem_tlv_command(snd_hctl_elem_t *elem, const unsigned int *tlv);
    00562
    00563 snd_hctl_t *snd_hctl_elem_get_hctl(snd_hctl_elem_t *elem);
    00564
    00565 void snd_hctl_elem_get_id(const snd_hctl_elem_t *obj, snd_ctl_elem_id_t *ptr);
    00566 unsigned int snd_hctl_elem_get_numid(const snd_hctl_elem_t *obj);
    00567 snd_ctl_elem_iface_t snd_hctl_elem_get_interface(const snd_hctl_elem_t *obj);
    00568 unsigned int snd_hctl_elem_get_device(const snd_hctl_elem_t *obj);
    00569 unsigned int snd_hctl_elem_get_subdevice(const snd_hctl_elem_t *obj);
    00570 const char *snd_hctl_elem_get_name(const snd_hctl_elem_t *obj);
    00571 unsigned int snd_hctl_elem_get_index(const snd_hctl_elem_t *obj);
    00572 void snd_hctl_elem_set_callback(snd_hctl_elem_t *obj, snd_hctl_elem_callback_t val);
    00573 void * snd_hctl_elem_get_callback_private(const snd_hctl_elem_t *obj);
    00574 void snd_hctl_elem_set_callback_private(snd_hctl_elem_t *obj, void * val);
    00575
    00587 int snd_sctl_build(snd_sctl_t **ctl, snd_ctl_t *handle, snd_config_t *config,
    00588                    snd_config_t *private_data, int mode);
    00589 int snd_sctl_free(snd_sctl_t *handle);
    00590 int snd_sctl_install(snd_sctl_t *handle);
    00591 int snd_sctl_remove(snd_sctl_t *handle);
    00592
    00595 #ifdef __cplusplus
    00596 }
    00597 #endif
    00598
    00599 #endif /* __ALSA_CONTROL_H */

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