1 /****************************************************************************
6 ****************************************************************************/
9 * \defgroup Control Control Interface
10 * The control interface.
14 typedef struct sndrv_aes_iec958 snd_aes_iec958_t;
16 /** CTL card info container */
17 typedef struct _snd_ctl_card_info snd_ctl_card_info_t;
19 /** CTL element identificator container */
20 typedef struct _snd_ctl_elem_id snd_ctl_elem_id_t;
22 /** CTL element identificator list container */
23 typedef struct _snd_ctl_elem_list snd_ctl_elem_list_t;
25 /** CTL element info container */
26 typedef struct _snd_ctl_elem_info snd_ctl_elem_info_t;
28 /** CTL element value container */
29 typedef struct _snd_ctl_elem_value snd_ctl_elem_value_t;
31 /** CTL event container */
32 typedef struct _snd_ctl_event snd_ctl_event_t;
35 typedef enum _snd_card_type {
36 /** Gravis UltraSound Classic */
37 SND_CARD_TYPE_GUS_CLASSIC = SNDRV_CARD_TYPE_GUS_CLASSIC,
38 /** Gravis UltraSound Extreme */
39 SND_CARD_TYPE_GUS_EXTREME = SNDRV_CARD_TYPE_GUS_EXTREME,
40 /** Gravis UltraSound ACE */
41 SND_CARD_TYPE_GUS_ACE = SNDRV_CARD_TYPE_GUS_ACE,
42 /** Gravis UltraSound Max */
43 SND_CARD_TYPE_GUS_MAX = SNDRV_CARD_TYPE_GUS_MAX,
45 SND_CARD_TYPE_AMD_INTERWAVE = SNDRV_CARD_TYPE_AMD_INTERWAVE,
46 /** SoundBlaster v1.0 */
47 SND_CARD_TYPE_SB_10 = SNDRV_CARD_TYPE_SB_10,
48 /** SoundBlaster v2.0 */
49 SND_CARD_TYPE_SB_20 = SNDRV_CARD_TYPE_SB_20,
50 /** SoundBlaster Pro */
51 SND_CARD_TYPE_SB_PRO = SNDRV_CARD_TYPE_SB_PRO,
52 /** SoundBlaster 16 */
53 SND_CARD_TYPE_SB_16 = SNDRV_CARD_TYPE_SB_16,
54 /** SoundBlaster AWE */
55 SND_CARD_TYPE_SB_AWE = SNDRV_CARD_TYPE_SB_AWE,
57 SND_CARD_TYPE_ESS_ES1688 = SNDRV_CARD_TYPE_ESS_ES1688,
58 /** Yamaha OPL3 SA2/3 */
59 SND_CARD_TYPE_OPL3_SA2 = SNDRV_CARD_TYPE_OPL3_SA2,
61 SND_CARD_TYPE_MOZART = SNDRV_CARD_TYPE_MOZART,
63 SND_CARD_TYPE_S3_SONICVIBES = SNDRV_CARD_TYPE_S3_SONICVIBES,
64 /** Ensoniq AudioPCI ES1370 */
65 SND_CARD_TYPE_ENS1370 = SNDRV_CARD_TYPE_ENS1370,
66 /** Ensoniq AudioPCI ES1371 / Creative CT5880 */
67 SND_CARD_TYPE_ENS1371 = SNDRV_CARD_TYPE_ENS1371,
68 /** Cirrus Logic CS4232 */
69 SND_CARD_TYPE_CS4232 = SNDRV_CARD_TYPE_CS4232,
70 /** Cirrus Logic CS4236+ */
71 SND_CARD_TYPE_CS4236 = SNDRV_CARD_TYPE_CS4236,
72 /** AMD InterWave + TEA6330T */
73 SND_CARD_TYPE_AMD_INTERWAVE_STB = SNDRV_CARD_TYPE_AMD_INTERWAVE_STB,
75 SND_CARD_TYPE_ESS_ES1938 = SNDRV_CARD_TYPE_ESS_ES1938,
77 SND_CARD_TYPE_ESS_ES18XX = SNDRV_CARD_TYPE_ESS_ES18XX,
78 /** Cirus Logic CS4231 */
79 SND_CARD_TYPE_CS4231 = SNDRV_CARD_TYPE_CS4231,
81 SND_CARD_TYPE_OPTI92X = SNDRV_CARD_TYPE_OPTI92X,
83 SND_CARD_TYPE_SERIAL = SNDRV_CARD_TYPE_SERIAL,
84 /** Analog Devices AD1848 */
85 SND_CARD_TYPE_AD1848 = SNDRV_CARD_TYPE_AD1848,
86 /** Trident 4D-Wave DX */
87 SND_CARD_TYPE_TRID4DWAVEDX = SNDRV_CARD_TYPE_TRID4DWAVEDX,
88 /** Trident 4D-Wave NX */
89 SND_CARD_TYPE_TRID4DWAVENX = SNDRV_CARD_TYPE_TRID4DWAVENX,
91 SND_CARD_TYPE_SGALAXY = SNDRV_CARD_TYPE_SGALAXY,
92 /** Cirrus Logic CS46xx */
93 SND_CARD_TYPE_CS46XX = SNDRV_CARD_TYPE_CS46XX,
95 SND_CARD_TYPE_WAVEFRONT = SNDRV_CARD_TYPE_WAVEFRONT,
96 /** Turtle Beach Tropez */
97 SND_CARD_TYPE_TROPEZ = SNDRV_CARD_TYPE_TROPEZ,
98 /** Turtle Beach Tropez+ */
99 SND_CARD_TYPE_TROPEZPLUS = SNDRV_CARD_TYPE_TROPEZPLUS,
100 /** Turtle Beach Maui */
101 SND_CARD_TYPE_MAUI = SNDRV_CARD_TYPE_MAUI,
103 SND_CARD_TYPE_CMI8330 = SNDRV_CARD_TYPE_CMI8330,
104 /** Dummy (/dev/null) soundcard */
105 SND_CARD_TYPE_DUMMY = SNDRV_CARD_TYPE_DUMMY,
106 /** Avance Logic ALS100 */
107 SND_CARD_TYPE_ALS100 = SNDRV_CARD_TYPE_ALS100,
109 SND_CARD_TYPE_SHARE = SNDRV_CARD_TYPE_SHARE,
111 SND_CARD_TYPE_SI_7018 = SNDRV_CARD_TYPE_SI_7018,
113 SND_CARD_TYPE_OPTI93X = SNDRV_CARD_TYPE_OPTI93X,
114 /** MidiTimePiece AV multiport MIDI */
115 SND_CARD_TYPE_MTPAV = SNDRV_CARD_TYPE_MTPAV,
117 SND_CARD_TYPE_VIRMIDI = SNDRV_CARD_TYPE_VIRMIDI,
118 /** EMU10K1 (SB Live, Emu APS) */
119 SND_CARD_TYPE_EMU10K1 = SNDRV_CARD_TYPE_EMU10K1,
120 /** RME Hammerfall */
121 SND_CARD_TYPE_HAMMERFALL = SNDRV_CARD_TYPE_HAMMERFALL,
122 /** RME Hammerfall light */
123 SND_CARD_TYPE_HAMMERFALL_LIGHT = SNDRV_CARD_TYPE_HAMMERFALL_LIGHT,
124 /** ICE1712 (Envy24) */
125 SND_CARD_TYPE_ICE1712 = SNDRV_CARD_TYPE_ICE1712,
127 SND_CARD_TYPE_CMI8338 = SNDRV_CARD_TYPE_CMI8338,
129 SND_CARD_TYPE_CMI8738 = SNDRV_CARD_TYPE_CMI8738,
130 /** Analog Device AD1816A */
131 SND_CARD_TYPE_AD1816A = SNDRV_CARD_TYPE_AD1816A,
133 SND_CARD_TYPE_INTEL8X0 = SNDRV_CARD_TYPE_INTEL8X0,
134 /** ESS Maestro 1 (old) */
135 SND_CARD_TYPE_ESS_ESOLDM1 = SNDRV_CARD_TYPE_ESS_ESOLDM1,
137 SND_CARD_TYPE_ESS_ES1968 = SNDRV_CARD_TYPE_ESS_ES1968,
138 /** ESS Maestro 2E */
139 SND_CARD_TYPE_ESS_ES1978 = SNDRV_CARD_TYPE_ESS_ES1978,
141 SND_CARD_TYPE_DIGI96 = SNDRV_CARD_TYPE_DIGI96,
142 /** VIA SouthBridge 686A/686B */
143 SND_CARD_TYPE_VIA82C686A = SNDRV_CARD_TYPE_VIA82C686A,
144 /** Forte Media FM801 */
145 SND_CARD_TYPE_FM801 = SNDRV_CARD_TYPE_FM801,
146 /** Aztech AZT2320 */
147 SND_CARD_TYPE_AZT2320 = SNDRV_CARD_TYPE_AZT2320,
149 SND_CARD_TYPE_PRODIF_PLUS = SNDRV_CARD_TYPE_PRODIF_PLUS,
151 SND_CARD_TYPE_YMFPCI = SNDRV_CARD_TYPE_YMFPCI,
152 /** Cirrus Logic CS4281 */
153 SND_CARD_TYPE_CS4281 = SNDRV_CARD_TYPE_CS4281,
154 /** Generic MPU401 UART */
155 SND_CARD_TYPE_MPU401_UART = SNDRV_CARD_TYPE_MPU401_UART,
156 /** Avance Logic ALS4000 */
157 SND_CARD_TYPE_ALS4000 = SNDRV_CARD_TYPE_ALS4000,
159 SND_CARD_TYPE_ALLEGRO_1 = SNDRV_CARD_TYPE_ALLEGRO_1,
161 SND_CARD_TYPE_ALLEGRO = SNDRV_CARD_TYPE_ALLEGRO,
163 SND_CARD_TYPE_MAESTRO3 = SNDRV_CARD_TYPE_MAESTRO3,
165 SND_CARD_TYPE_AWACS = SNDRV_CARD_TYPE_AWACS,
166 /** NeoMagic NM256AV */
167 SND_CARD_TYPE_NM256AV = SNDRV_CARD_TYPE_NM256AV,
168 /** NeoMagic NM256ZX */
169 SND_CARD_TYPE_NM256ZX = SNDRV_CARD_TYPE_NM256ZX,
170 /** VIA VT8233 bridge */
171 SND_CARD_TYPE_VIA8233 = SNDRV_CARD_TYPE_VIA8233,
172 SND_CARD_TYPE_LAST = SNDRV_CARD_TYPE_LAST,
175 /** CTL element type */
176 typedef enum _snd_ctl_elem_type {
178 SND_CTL_ELEM_TYPE_NONE = SNDRV_CTL_ELEM_TYPE_NONE,
179 /** Boolean contents */
180 SND_CTL_ELEM_TYPE_BOOLEAN = SNDRV_CTL_ELEM_TYPE_BOOLEAN,
181 /** Integer contents */
182 SND_CTL_ELEM_TYPE_INTEGER = SNDRV_CTL_ELEM_TYPE_INTEGER,
183 /** Enumerated contents */
184 SND_CTL_ELEM_TYPE_ENUMERATED = SNDRV_CTL_ELEM_TYPE_ENUMERATED,
185 /** Bytes contents */
186 SND_CTL_ELEM_TYPE_BYTES = SNDRV_CTL_ELEM_TYPE_BYTES,
187 /** IEC958 (S/PDIF) setting content */
188 SND_CTL_ELEM_TYPE_IEC958 = SNDRV_CTL_ELEM_TYPE_IEC958,
189 SND_CTL_ELEM_TYPE_LAST = SNDRV_CTL_ELEM_TYPE_LAST,
190 } snd_ctl_elem_type_t;
192 /** CTL related interface */
193 typedef enum _snd_ctl_elem_iface {
195 SND_CTL_ELEM_IFACE_CARD = SNDRV_CTL_ELEM_IFACE_CARD,
196 /** Hardware dependent device */
197 SND_CTL_ELEM_IFACE_HWDEP = SNDRV_CTL_ELEM_IFACE_HWDEP,
199 SND_CTL_ELEM_IFACE_MIXER = SNDRV_CTL_ELEM_IFACE_MIXER,
201 SND_CTL_ELEM_IFACE_PCM = SNDRV_CTL_ELEM_IFACE_PCM,
203 SND_CTL_ELEM_IFACE_RAWMIDI = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
205 SND_CTL_ELEM_IFACE_TIMER = SNDRV_CTL_ELEM_IFACE_TIMER,
207 SND_CTL_ELEM_IFACE_SEQUENCER = SNDRV_CTL_ELEM_IFACE_SEQUENCER,
208 SND_CTL_ELEM_IFACE_LAST = SNDRV_CTL_ELEM_IFACE_LAST,
209 } snd_ctl_elem_iface_t;
212 typedef enum _snd_ctl_event_type {
213 /** Elements related event */
214 SND_CTL_EVENT_ELEM = SNDRV_CTL_EVENT_ELEM,
215 SND_CTL_EVENT_LAST = SNDRV_CTL_EVENT_LAST,
216 }snd_ctl_event_type_t;
218 /** Element has been removed (Warning: test this first and if set don't
219 * test the other masks) \hideinitializer */
220 #define SND_CTL_EVENT_MASK_REMOVE SNDRV_CTL_EVENT_MASK_REMOVE
221 /** Element has been added \hideinitializer */
222 #define SND_CTL_EVENT_MASK_ADD SNDRV_CTL_EVENT_MASK_ADD
223 /** Element info has been changed \hideinitializer */
224 #define SND_CTL_EVENT_MASK_INFO SNDRV_CTL_EVENT_MASK_INFO
225 /** Element value has been changed \hideinitializer */
226 #define SND_CTL_EVENT_MASK_VALUE SNDRV_CTL_EVENT_MASK_VALUE
228 #define SND_CTL_NAME_IEC958 SNDRV_CTL_NAME_IEC958
231 typedef enum _snd_ctl_type {
232 /** Kernel level CTL */
234 /** Shared memory client CTL */
236 /** INET client CTL (not yet implemented) */
240 /** Non blocking mode \hideinitializer */
241 #define SND_CTL_NONBLOCK 0x0001
243 /** Async notification \hideinitializer */
244 #define SND_CTL_ASYNC 0x0002
247 typedef struct _snd_ctl snd_ctl_t;
249 /** Don't destroy the ctl handle when close */
250 #define SND_SCTL_NOFREE 0x0001
253 typedef struct _snd_sctl snd_sctl_t;
259 int snd_card_load(int card);
260 int snd_card_next(int *card);
261 int snd_card_get_index(const char *name);
262 int snd_card_get_name(int card, char **name);
263 int snd_card_get_longname(int card, char **name);
265 int snd_card_type_string_to_enum(const char *strid, snd_card_type_t *enumid);
266 int snd_card_type_enum_to_string(snd_card_type_t enumid, char **strid);
268 int snd_sctl_build(snd_sctl_t **ctl, snd_ctl_t *handle, snd_config_t *config,
269 snd_config_string_replace_callback_t *callback,
270 void *private_data, int mode);
271 int snd_sctl_free(snd_sctl_t *handle);
272 int snd_sctl_install(snd_sctl_t *handle);
273 int snd_sctl_remove(snd_sctl_t *handle);
275 int snd_ctl_open(snd_ctl_t **ctl, const char *name, int mode);
276 int snd_ctl_close(snd_ctl_t *ctl);
277 int snd_ctl_nonblock(snd_ctl_t *ctl, int nonblock);
278 int snd_ctl_async(snd_ctl_t *ctl, int sig, pid_t pid);
279 int snd_ctl_poll_descriptors_count(snd_ctl_t *ctl);
280 int snd_ctl_poll_descriptors(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int space);
281 int snd_ctl_subscribe_events(snd_ctl_t *ctl, int subscribe);
282 int snd_ctl_card_info(snd_ctl_t *ctl, snd_ctl_card_info_t *info);
283 int snd_ctl_elem_list(snd_ctl_t *ctl, snd_ctl_elem_list_t * list);
284 int snd_ctl_elem_info(snd_ctl_t *ctl, snd_ctl_elem_info_t *info);
285 int snd_ctl_elem_read(snd_ctl_t *ctl, snd_ctl_elem_value_t *value);
286 int snd_ctl_elem_write(snd_ctl_t *ctl, snd_ctl_elem_value_t *value);
287 int snd_ctl_elem_lock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
288 int snd_ctl_elem_unlock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
289 int snd_ctl_hwdep_next_device(snd_ctl_t *ctl, int * device);
290 int snd_ctl_hwdep_info(snd_ctl_t *ctl, snd_hwdep_info_t * info);
291 int snd_ctl_pcm_next_device(snd_ctl_t *ctl, int *device);
292 int snd_ctl_pcm_info(snd_ctl_t *ctl, snd_pcm_info_t * info);
293 int snd_ctl_pcm_prefer_subdevice(snd_ctl_t *ctl, int subdev);
294 int snd_ctl_rawmidi_next_device(snd_ctl_t *ctl, int * device);
295 int snd_ctl_rawmidi_info(snd_ctl_t *ctl, snd_rawmidi_info_t * info);
296 int snd_ctl_rawmidi_prefer_subdevice(snd_ctl_t *ctl, int subdev);
298 int snd_ctl_read(snd_ctl_t *ctl, snd_ctl_event_t *event);
299 int snd_ctl_wait(snd_ctl_t *ctl, int timeout);
300 const char *snd_ctl_name(snd_ctl_t *ctl);
301 snd_ctl_type_t snd_ctl_type(snd_ctl_t *ctl);
303 void snd_ctl_elem_set_bytes(snd_ctl_elem_value_t *obj, void *data, size_t size);
304 const char *snd_ctl_elem_type_name(snd_ctl_elem_type_t type);
305 const char *snd_ctl_elem_iface_name(snd_ctl_elem_iface_t iface);
306 const char *snd_ctl_event_type_name(snd_ctl_event_type_t type);
308 unsigned int snd_ctl_event_elem_get_mask(const snd_ctl_event_t *obj);
309 unsigned int snd_ctl_event_elem_get_numid(const snd_ctl_event_t *obj);
310 void snd_ctl_event_elem_get_id(const snd_ctl_event_t *obj, snd_ctl_elem_id_t *ptr);
311 snd_ctl_elem_iface_t snd_ctl_event_elem_get_interface(const snd_ctl_event_t *obj);
312 unsigned int snd_ctl_event_elem_get_device(const snd_ctl_event_t *obj);
313 unsigned int snd_ctl_event_elem_get_subdevice(const snd_ctl_event_t *obj);
314 const char *snd_ctl_event_elem_get_name(const snd_ctl_event_t *obj);
315 unsigned int snd_ctl_event_elem_get_index(const snd_ctl_event_t *obj);
317 int snd_ctl_elem_list_alloc_space(snd_ctl_elem_list_t *obj, unsigned int entries);
318 void snd_ctl_elem_list_free_space(snd_ctl_elem_list_t *obj);
320 size_t snd_ctl_elem_id_sizeof(void);
322 * \brief allocate an invalid #snd_ctl_elem_id_t using standard alloca
323 * \param ptr returned pointer
325 #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)
326 int snd_ctl_elem_id_malloc(snd_ctl_elem_id_t **ptr);
327 void snd_ctl_elem_id_free(snd_ctl_elem_id_t *obj);
328 void snd_ctl_elem_id_copy(snd_ctl_elem_id_t *dst, const snd_ctl_elem_id_t *src);
329 unsigned int snd_ctl_elem_id_get_numid(const snd_ctl_elem_id_t *obj);
330 snd_ctl_elem_iface_t snd_ctl_elem_id_get_interface(const snd_ctl_elem_id_t *obj);
331 unsigned int snd_ctl_elem_id_get_device(const snd_ctl_elem_id_t *obj);
332 unsigned int snd_ctl_elem_id_get_subdevice(const snd_ctl_elem_id_t *obj);
333 const char *snd_ctl_elem_id_get_name(const snd_ctl_elem_id_t *obj);
334 unsigned int snd_ctl_elem_id_get_index(const snd_ctl_elem_id_t *obj);
335 void snd_ctl_elem_id_set_numid(snd_ctl_elem_id_t *obj, unsigned int val);
336 void snd_ctl_elem_id_set_interface(snd_ctl_elem_id_t *obj, snd_ctl_elem_iface_t val);
337 void snd_ctl_elem_id_set_device(snd_ctl_elem_id_t *obj, unsigned int val);
338 void snd_ctl_elem_id_set_subdevice(snd_ctl_elem_id_t *obj, unsigned int val);
339 void snd_ctl_elem_id_set_name(snd_ctl_elem_id_t *obj, const char *val);
340 void snd_ctl_elem_id_set_index(snd_ctl_elem_id_t *obj, unsigned int val);
342 size_t snd_ctl_card_info_sizeof(void);
344 * \brief allocate an invalid #snd_ctl_card_info_t using standard alloca
345 * \param ptr returned pointer
347 #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)
348 int snd_ctl_card_info_malloc(snd_ctl_card_info_t **ptr);
349 void snd_ctl_card_info_free(snd_ctl_card_info_t *obj);
350 void snd_ctl_card_info_copy(snd_ctl_card_info_t *dst, const snd_ctl_card_info_t *src);
351 int snd_ctl_card_info_get_card(const snd_ctl_card_info_t *obj);
352 snd_card_type_t snd_ctl_card_info_get_type(const snd_ctl_card_info_t *obj);
353 const char *snd_ctl_card_info_get_id(const snd_ctl_card_info_t *obj);
354 const char *snd_ctl_card_info_get_abbreviation(const snd_ctl_card_info_t *obj);
355 const char *snd_ctl_card_info_get_name(const snd_ctl_card_info_t *obj);
356 const char *snd_ctl_card_info_get_longname(const snd_ctl_card_info_t *obj);
357 const char *snd_ctl_card_info_get_mixerid(const snd_ctl_card_info_t *obj);
358 const char *snd_ctl_card_info_get_mixername(const snd_ctl_card_info_t *obj);
360 size_t snd_ctl_event_sizeof(void);
362 * \brief allocate an invalid #snd_ctl_event_t using standard alloca
363 * \param ptr returned pointer
365 #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)
366 int snd_ctl_event_malloc(snd_ctl_event_t **ptr);
367 void snd_ctl_event_free(snd_ctl_event_t *obj);
368 void snd_ctl_event_copy(snd_ctl_event_t *dst, const snd_ctl_event_t *src);
369 snd_ctl_event_type_t snd_ctl_event_get_type(const snd_ctl_event_t *obj);
371 size_t snd_ctl_elem_list_sizeof(void);
373 * \brief allocate an invalid #snd_ctl_elem_list_t using standard alloca
374 * \param ptr returned pointer
376 #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)
377 int snd_ctl_elem_list_malloc(snd_ctl_elem_list_t **ptr);
378 void snd_ctl_elem_list_free(snd_ctl_elem_list_t *obj);
379 void snd_ctl_elem_list_copy(snd_ctl_elem_list_t *dst, const snd_ctl_elem_list_t *src);
380 void snd_ctl_elem_list_set_offset(snd_ctl_elem_list_t *obj, unsigned int val);
381 unsigned int snd_ctl_elem_list_get_used(const snd_ctl_elem_list_t *obj);
382 unsigned int snd_ctl_elem_list_get_count(const snd_ctl_elem_list_t *obj);
383 void snd_ctl_elem_list_get_id(const snd_ctl_elem_list_t *obj, unsigned int idx, snd_ctl_elem_id_t *ptr);
384 unsigned int snd_ctl_elem_list_get_numid(const snd_ctl_elem_list_t *obj, unsigned int idx);
385 snd_ctl_elem_iface_t snd_ctl_elem_list_get_interface(const snd_ctl_elem_list_t *obj, unsigned int idx);
386 unsigned int snd_ctl_elem_list_get_device(const snd_ctl_elem_list_t *obj, unsigned int idx);
387 unsigned int snd_ctl_elem_list_get_subdevice(const snd_ctl_elem_list_t *obj, unsigned int idx);
388 const char *snd_ctl_elem_list_get_name(const snd_ctl_elem_list_t *obj, unsigned int idx);
389 unsigned int snd_ctl_elem_list_get_index(const snd_ctl_elem_list_t *obj, unsigned int idx);
391 size_t snd_ctl_elem_info_sizeof(void);
393 * \brief allocate an invalid #snd_ctl_elem_info_t using standard alloca
394 * \param ptr returned pointer
396 #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)
397 int snd_ctl_elem_info_malloc(snd_ctl_elem_info_t **ptr);
398 void snd_ctl_elem_info_free(snd_ctl_elem_info_t *obj);
399 void snd_ctl_elem_info_copy(snd_ctl_elem_info_t *dst, const snd_ctl_elem_info_t *src);
400 snd_ctl_elem_type_t snd_ctl_elem_info_get_type(const snd_ctl_elem_info_t *obj);
401 int snd_ctl_elem_info_is_readable(const snd_ctl_elem_info_t *obj);
402 int snd_ctl_elem_info_is_writable(const snd_ctl_elem_info_t *obj);
403 int snd_ctl_elem_info_is_volatile(const snd_ctl_elem_info_t *obj);
404 int snd_ctl_elem_info_is_inactive(const snd_ctl_elem_info_t *obj);
405 int snd_ctl_elem_info_is_locked(const snd_ctl_elem_info_t *obj);
406 int snd_ctl_elem_info_is_owner(const snd_ctl_elem_info_t *obj);
407 int snd_ctl_elem_info_is_indirect(const snd_ctl_elem_info_t *obj);
408 pid_t snd_ctl_elem_info_get_owner(const snd_ctl_elem_info_t *obj);
409 unsigned int snd_ctl_elem_info_get_count(const snd_ctl_elem_info_t *obj);
410 long snd_ctl_elem_info_get_min(const snd_ctl_elem_info_t *obj);
411 long snd_ctl_elem_info_get_max(const snd_ctl_elem_info_t *obj);
412 long snd_ctl_elem_info_get_step(const snd_ctl_elem_info_t *obj);
413 unsigned int snd_ctl_elem_info_get_items(const snd_ctl_elem_info_t *obj);
414 void snd_ctl_elem_info_set_item(snd_ctl_elem_info_t *obj, unsigned int val);
415 const char *snd_ctl_elem_info_get_item_name(const snd_ctl_elem_info_t *obj);
416 void snd_ctl_elem_info_get_id(const snd_ctl_elem_info_t *obj, snd_ctl_elem_id_t *ptr);
417 unsigned int snd_ctl_elem_info_get_numid(const snd_ctl_elem_info_t *obj);
418 snd_ctl_elem_iface_t snd_ctl_elem_info_get_interface(const snd_ctl_elem_info_t *obj);
419 unsigned int snd_ctl_elem_info_get_device(const snd_ctl_elem_info_t *obj);
420 unsigned int snd_ctl_elem_info_get_subdevice(const snd_ctl_elem_info_t *obj);
421 const char *snd_ctl_elem_info_get_name(const snd_ctl_elem_info_t *obj);
422 unsigned int snd_ctl_elem_info_get_index(const snd_ctl_elem_info_t *obj);
423 void snd_ctl_elem_info_set_id(snd_ctl_elem_info_t *obj, const snd_ctl_elem_id_t *ptr);
424 void snd_ctl_elem_info_set_numid(snd_ctl_elem_info_t *obj, unsigned int val);
425 void snd_ctl_elem_info_set_interface(snd_ctl_elem_info_t *obj, snd_ctl_elem_iface_t val);
426 void snd_ctl_elem_info_set_device(snd_ctl_elem_info_t *obj, unsigned int val);
427 void snd_ctl_elem_info_set_subdevice(snd_ctl_elem_info_t *obj, unsigned int val);
428 void snd_ctl_elem_info_set_name(snd_ctl_elem_info_t *obj, const char *val);
429 void snd_ctl_elem_info_set_index(snd_ctl_elem_info_t *obj, unsigned int val);
431 size_t snd_ctl_elem_value_sizeof(void);
433 * \brief allocate an invalid #snd_ctl_elem_value_t using standard alloca
434 * \param ptr returned pointer
436 #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)
437 int snd_ctl_elem_value_malloc(snd_ctl_elem_value_t **ptr);
438 void snd_ctl_elem_value_free(snd_ctl_elem_value_t *obj);
439 void snd_ctl_elem_value_copy(snd_ctl_elem_value_t *dst, const snd_ctl_elem_value_t *src);
440 void snd_ctl_elem_value_get_id(const snd_ctl_elem_value_t *obj, snd_ctl_elem_id_t *ptr);
441 unsigned int snd_ctl_elem_value_get_numid(const snd_ctl_elem_value_t *obj);
442 snd_ctl_elem_iface_t snd_ctl_elem_value_get_interface(const snd_ctl_elem_value_t *obj);
443 unsigned int snd_ctl_elem_value_get_device(const snd_ctl_elem_value_t *obj);
444 unsigned int snd_ctl_elem_value_get_subdevice(const snd_ctl_elem_value_t *obj);
445 const char *snd_ctl_elem_value_get_name(const snd_ctl_elem_value_t *obj);
446 unsigned int snd_ctl_elem_value_get_index(const snd_ctl_elem_value_t *obj);
447 void snd_ctl_elem_value_set_id(snd_ctl_elem_value_t *obj, const snd_ctl_elem_id_t *ptr);
448 void snd_ctl_elem_value_set_numid(snd_ctl_elem_value_t *obj, unsigned int val);
449 void snd_ctl_elem_value_set_interface(snd_ctl_elem_value_t *obj, snd_ctl_elem_iface_t val);
450 void snd_ctl_elem_value_set_device(snd_ctl_elem_value_t *obj, unsigned int val);
451 void snd_ctl_elem_value_set_subdevice(snd_ctl_elem_value_t *obj, unsigned int val);
452 void snd_ctl_elem_value_set_name(snd_ctl_elem_value_t *obj, const char *val);
453 void snd_ctl_elem_value_set_index(snd_ctl_elem_value_t *obj, unsigned int val);
454 int snd_ctl_elem_value_get_boolean(const snd_ctl_elem_value_t *obj, unsigned int idx);
455 long snd_ctl_elem_value_get_integer(const snd_ctl_elem_value_t *obj, unsigned int idx);
456 unsigned int snd_ctl_elem_value_get_enumerated(const snd_ctl_elem_value_t *obj, unsigned int idx);
457 unsigned char snd_ctl_elem_value_get_byte(const snd_ctl_elem_value_t *obj, unsigned int idx);
458 void snd_ctl_elem_value_set_boolean(snd_ctl_elem_value_t *obj, unsigned int idx, long val);
459 void snd_ctl_elem_value_set_integer(snd_ctl_elem_value_t *obj, unsigned int idx, long val);
460 void snd_ctl_elem_value_set_enumerated(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned int val);
461 void snd_ctl_elem_value_set_byte(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned char val);
462 const void * snd_ctl_elem_value_get_bytes(const snd_ctl_elem_value_t *obj);
463 void snd_ctl_elem_value_get_iec958(const snd_ctl_elem_value_t *obj, snd_aes_iec958_t *ptr);
464 void snd_ctl_elem_value_set_iec958(snd_ctl_elem_value_t *obj, const snd_aes_iec958_t *ptr);
471 * \defgroup HControl Highlevel Control Interface
473 * The highlevel control interface.
477 /** HCTL element handle */
478 typedef struct _snd_hctl_elem snd_hctl_elem_t;
481 typedef struct _snd_hctl snd_hctl_t;
488 * \brief Compare function for sorting HCTL elements
489 * \param e1 First element
490 * \param e2 Second element
491 * \return -1 if e1 < e2, 0 if e1 == e2, 1 if e1 > e2
493 typedef int (*snd_hctl_compare_t)(const snd_hctl_elem_t *e1,
494 const snd_hctl_elem_t *e2);
495 int snd_hctl_compare_fast(const snd_hctl_elem_t *c1,
496 const snd_hctl_elem_t *c2);
498 * \brief HCTL callback function
499 * \param hctl HCTL handle
500 * \param mask event mask
501 * \param elem related HCTL element (if any)
502 * \return 0 on success otherwise a negative error code
504 typedef int (*snd_hctl_callback_t)(snd_hctl_t *hctl,
506 snd_hctl_elem_t *elem);
508 * \brief HCTL element callback function
509 * \param elem HCTL element
510 * \param mask event mask
511 * \return 0 on success otherwise a negative error code
513 typedef int (*snd_hctl_elem_callback_t)(snd_hctl_elem_t *elem,
516 int snd_hctl_open(snd_hctl_t **hctl, const char *name, int mode);
517 int snd_hctl_close(snd_hctl_t *hctl);
518 int snd_hctl_nonblock(snd_hctl_t *hctl, int nonblock);
519 int snd_hctl_async(snd_hctl_t *hctl, int sig, pid_t pid);
520 int snd_hctl_poll_descriptors_count(snd_hctl_t *hctl);
521 int snd_hctl_poll_descriptors(snd_hctl_t *hctl, struct pollfd *pfds, unsigned int space);
522 unsigned int snd_hctl_get_count(snd_hctl_t *hctl);
523 int snd_hctl_set_compare(snd_hctl_t *hctl, snd_hctl_compare_t hsort);
524 snd_hctl_elem_t *snd_hctl_first_elem(snd_hctl_t *hctl);
525 snd_hctl_elem_t *snd_hctl_last_elem(snd_hctl_t *hctl);
526 snd_hctl_elem_t *snd_hctl_find_elem(snd_hctl_t *hctl, const snd_ctl_elem_id_t *id);
527 void snd_hctl_set_callback(snd_hctl_t *hctl, snd_hctl_callback_t callback);
528 void snd_hctl_set_callback_private(snd_hctl_t *hctl, void *data);
529 void *snd_hctl_get_callback_private(snd_hctl_t *hctl);
530 int snd_hctl_load(snd_hctl_t *hctl);
531 int snd_hctl_free(snd_hctl_t *hctl);
532 int snd_hctl_handle_events(snd_hctl_t *hctl);
533 const char *snd_hctl_name(snd_hctl_t *hctl);
534 snd_ctl_type_t snd_hctl_type(snd_hctl_t *hctl);
535 int snd_hctl_wait(snd_hctl_t *hctl, int timeout);
537 snd_hctl_elem_t *snd_hctl_elem_next(snd_hctl_elem_t *elem);
538 snd_hctl_elem_t *snd_hctl_elem_prev(snd_hctl_elem_t *elem);
539 int snd_hctl_elem_info(snd_hctl_elem_t *elem, snd_ctl_elem_info_t * info);
540 int snd_hctl_elem_read(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value);
541 int snd_hctl_elem_write(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value);
543 snd_hctl_t *snd_hctl_elem_get_hctl(snd_hctl_elem_t *elem);
545 void snd_hctl_elem_get_id(const snd_hctl_elem_t *obj, snd_ctl_elem_id_t *ptr);
546 unsigned int snd_hctl_elem_get_numid(const snd_hctl_elem_t *obj);
547 snd_ctl_elem_iface_t snd_hctl_elem_get_interface(const snd_hctl_elem_t *obj);
548 unsigned int snd_hctl_elem_get_device(const snd_hctl_elem_t *obj);
549 unsigned int snd_hctl_elem_get_subdevice(const snd_hctl_elem_t *obj);
550 const char *snd_hctl_elem_get_name(const snd_hctl_elem_t *obj);
551 unsigned int snd_hctl_elem_get_index(const snd_hctl_elem_t *obj);
552 void snd_hctl_elem_set_callback(snd_hctl_elem_t *obj, snd_hctl_elem_callback_t val);
553 void * snd_hctl_elem_get_callback_private(const snd_hctl_elem_t *obj);
554 void snd_hctl_elem_set_callback_private(snd_hctl_elem_t *obj, void * val);