28#ifndef __ALSA_CONTROL_H
29#define __ALSA_CONTROL_H
43#define SND_CONTROL_DLSYM_VERSION _dlsym_control_001
46typedef struct snd_aes_iec958 {
47 unsigned char status[24];
48 unsigned char subcode[147];
50 unsigned char dig_subframe[4];
216typedef enum _snd_ctl_elem_type {
235typedef enum _snd_ctl_elem_iface {
254typedef enum _snd_ctl_event_type {
262#define SND_CTL_EVENT_MASK_REMOVE (~0U)
264#define SND_CTL_EVENT_MASK_VALUE (1<<0)
266#define SND_CTL_EVENT_MASK_INFO (1<<1)
268#define SND_CTL_EVENT_MASK_ADD (1<<2)
270#define SND_CTL_EVENT_MASK_TLV (1<<3)
273#define SND_CTL_NAME_NONE ""
275#define SND_CTL_NAME_PLAYBACK "Playback "
277#define SND_CTL_NAME_CAPTURE "Capture "
280#define SND_CTL_NAME_IEC958_NONE ""
282#define SND_CTL_NAME_IEC958_SWITCH "Switch"
284#define SND_CTL_NAME_IEC958_VOLUME "Volume"
286#define SND_CTL_NAME_IEC958_DEFAULT "Default"
288#define SND_CTL_NAME_IEC958_MASK "Mask"
290#define SND_CTL_NAME_IEC958_CON_MASK "Con Mask"
292#define SND_CTL_NAME_IEC958_PRO_MASK "Pro Mask"
294#define SND_CTL_NAME_IEC958_PCM_STREAM "PCM Stream"
296#define SND_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SND_CTL_NAME_##direction SND_CTL_NAME_IEC958_##what
299#define SND_CTL_POWER_MASK 0xff00
301#define SND_CTL_POWER_D0 0x0000
303#define SND_CTL_POWER_D1 0x0100
305#define SND_CTL_POWER_D2 0x0200
307#define SND_CTL_POWER_D3 0x0300
309#define SND_CTL_POWER_D3hot (SND_CTL_POWER_D3|0x0000)
311#define SND_CTL_POWER_D3cold (SND_CTL_POWER_D3|0x0001)
314#define SND_CTL_TLVT_CONTAINER 0x0000
316#define SND_CTL_TLVT_DB_SCALE 0x0001
318#define SND_CTL_TLVT_DB_LINEAR 0x0002
320#define SND_CTL_TLVT_DB_RANGE 0x0003
322#define SND_CTL_TLVT_DB_MINMAX 0x0004
324#define SND_CTL_TLVT_DB_MINMAX_MUTE 0x0005
327#define SND_CTL_TLV_DB_GAIN_MUTE -9999999
330#define SND_CTL_TLVT_CHMAP_FIXED 0x00101
332#define SND_CTL_TLVT_CHMAP_VAR 0x00102
334#define SND_CTL_TLVT_CHMAP_PAIRED 0x00103
337typedef enum _snd_ctl_type {
351#define SND_CTL_NONBLOCK 0x0001
354#define SND_CTL_ASYNC 0x0002
357#define SND_CTL_READONLY 0x0004
360#define SND_CTL_EINTR 0x0080
366#define SND_SCTL_NOFREE 0x0001
377int snd_device_name_hint(
int card,
const char *iface,
void ***hints);
378int snd_device_name_free_hint(
void **hints);
379char *snd_device_name_get_hint(
const void *hint,
const char *
id);
402 unsigned int *tlv,
unsigned int tlv_size);
404 const unsigned int *tlv);
406 const unsigned int *tlv);
416#ifdef __ALSA_RAWMIDI_H
457#define snd_ctl_elem_id_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_id)
490#define snd_ctl_card_info_alloca(ptr) __snd_alloca(ptr, snd_ctl_card_info)
509#define snd_ctl_event_alloca(ptr) __snd_alloca(ptr, snd_ctl_event)
527#define snd_ctl_elem_list_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_list)
549#define snd_ctl_elem_info_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_info)
579 const int dimension[4]);
599 unsigned int element_count,
600 unsigned int member_count,
601 long min,
long max,
long step);
603 unsigned int element_count,
604 unsigned int member_count,
605 long long min,
long long max,
608 unsigned int element_count,
609 unsigned int member_count);
611 unsigned int element_count,
612 unsigned int member_count,
614 const char *
const labels[]);
616 unsigned int element_count,
617 unsigned int member_count);
639#define snd_ctl_elem_value_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_value)
676 unsigned int **db_tlvp);
678 long *min,
long *max);
680 long volume,
long *db_gain);
682 long db_gain,
long *value,
int xdir);
684 long *min,
long *max);
686 long volume,
long *db_gain);
688 long db_gain,
long *value,
int xdir);
int snd_ctl_pcm_prefer_subdevice(snd_ctl_t *ctl, int subdev)
Set preferred PCM subdevice number of successive PCM open.
Definition control.c:1228
int snd_ctl_rawmidi_next_device(snd_ctl_t *ctl, int *device)
Get next RawMidi device number.
Definition control.c:1240
int snd_ctl_hwdep_info(snd_ctl_t *ctl, snd_hwdep_info_t *info)
Get info about a hardware dependent device.
Definition control.c:1192
int snd_ctl_rawmidi_info(snd_ctl_t *ctl, snd_rawmidi_info_t *info)
Get info about a RawMidi device.
Definition control.c:1252
int snd_ctl_hwdep_next_device(snd_ctl_t *ctl, int *device)
Get next hardware dependent device number.
Definition control.c:1180
int snd_ctl_pcm_info(snd_ctl_t *ctl, snd_pcm_info_t *info)
Get info about a PCM device.
Definition control.c:1216
int snd_ctl_pcm_next_device(snd_ctl_t *ctl, int *device)
Get next PCM device number.
Definition control.c:1204
int snd_ctl_rawmidi_prefer_subdevice(snd_ctl_t *ctl, int subdev)
Set preferred RawMidi subdevice number of successive RawMidi open.
Definition control.c:1264
struct _snd_config snd_config_t
Internal structure for a configuration node object.
Definition conf.h:69
int snd_ctl_open_fallback(snd_ctl_t **ctl, snd_config_t *root, const char *name, const char *orig_name, int mode)
Opens a fallback CTL.
Definition control.c:1611
size_t snd_ctl_elem_value_sizeof(void)
Get size of data structure for an element.
Definition control.c:3123
void snd_ctl_elem_value_set_interface(snd_ctl_elem_value_t *obj, snd_ctl_elem_iface_t val)
Set the identifiers 'interface' part within the given element value.
Definition control.c:3334
int snd_ctl_ascii_value_parse(snd_ctl_t *handle, snd_ctl_elem_value_t *dst, snd_ctl_elem_info_t *info, const char *value)
parse ASCII string as CTL element value
Definition ctlparse.c:346
struct _snd_ctl snd_ctl_t
Definition control.h:363
size_t snd_ctl_elem_info_sizeof(void)
get size of snd_ctl_elem_info_t
Definition control.c:2521
int snd_ctl_nonblock(snd_ctl_t *ctl, int nonblock)
set nonblock mode
Definition control.c:256
void snd_ctl_elem_value_set_byte(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned char val)
Set an element members value.
Definition control.c:3569
unsigned int snd_ctl_elem_list_get_count(const snd_ctl_elem_list_t *obj)
Get total count of elements present in CTL device.
Definition control.c:2420
void snd_ctl_elem_list_clear(snd_ctl_elem_list_t *obj)
Clear given snd_ctl_elem_list_t object.
Definition control.c:2360
void snd_ctl_elem_id_free(snd_ctl_elem_id_t *obj)
frees a previously allocated snd_ctl_elem_id_t
Definition control.c:1857
int snd_tlv_convert_from_dB(unsigned int *tlv, long rangemin, long rangemax, long db_gain, long *value, int xdir)
Convert from dB gain to the corresponding raw value.
Definition tlv.c:293
snd_ctl_elem_type_t snd_ctl_elem_info_get_type(const snd_ctl_elem_info_t *obj)
Get type from a CTL element id/info.
Definition control.c:2574
int snd_ctl_set_power_state(snd_ctl_t *ctl, unsigned int state)
Set Power State to given SND_CTL_POWER_* value and do the power management.
Definition control.c:1276
void snd_ctl_elem_info_set_numid(snd_ctl_elem_info_t *obj, unsigned int val)
Set element numeric identifier of a CTL element id/info.
Definition control.c:3018
int snd_ctl_card_info_get_card(const snd_ctl_card_info_t *obj)
Get the sound card index from the given info object.
Definition control.c:2152
snd_ctl_elem_iface_t
Definition control.h:235
int snd_ctl_elem_info_get_dimensions(const snd_ctl_elem_info_t *obj)
Get count of dimensions for given element.
Definition control.c:2842
int snd_card_get_index(const char *name)
Convert a card string to the card index.
Definition cards.c:140
unsigned int snd_ctl_event_elem_get_mask(const snd_ctl_event_t *obj)
Get event mask for an element related event.
Definition control.c:1731
unsigned int snd_ctl_elem_list_get_index(const snd_ctl_elem_list_t *obj, unsigned int idx)
Get index part of CTL element identifier for an entry of a CTL element identifiers list.
Definition control.c:2510
char * snd_ctl_ascii_elem_id_get(snd_ctl_elem_id_t *id)
return ASCII CTL element identifier name
Definition ctlparse.c:117
int snd_ctl_elem_info_is_locked(const snd_ctl_elem_info_t *obj)
Get info whether an element is locked.
Definition control.c:2629
int snd_ctl_elem_lock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id)
Lock CTL element.
Definition control.c:1156
void snd_ctl_elem_id_set_numid(snd_ctl_elem_id_t *obj, unsigned int val)
Set numeric identifier for a CTL element identifier.
Definition control.c:2018
int snd_ctl_elem_info_get_dimension(const snd_ctl_elem_info_t *obj, unsigned int idx)
Get specified of dimension width for given element.
Definition control.c:2871
int snd_async_add_ctl_handler(snd_async_handler_t **handler, snd_ctl_t *ctl, snd_async_callback_t callback, void *private_data)
Add an async handler for a CTL.
Definition control.c:1359
unsigned int snd_ctl_elem_list_get_used(const snd_ctl_elem_list_t *obj)
Get number of used entries in CTL element identifiers list.
Definition control.c:2402
struct _snd_ctl_elem_value snd_ctl_elem_value_t
Definition control.h:210
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[])
Create and add a user-defined control element of enumerated type.
Definition control.c:927
snd_ctl_event_type_t snd_ctl_event_get_type(const snd_ctl_event_t *obj)
Get type of a CTL event.
Definition control.c:2299
int snd_ctl_add_integer64_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info, unsigned int element_count, unsigned int member_count, long long min, long long max, long long step)
Create and add some user-defined control elements of integer64 type.
Definition control.c:630
int snd_ctl_event_malloc(snd_ctl_event_t **ptr)
allocate an invalid snd_ctl_event_t using standard malloc
Definition control.c:2256
void snd_ctl_elem_set_bytes(snd_ctl_elem_value_t *obj, void *data, size_t size)
Replace the data stored within the element.
Definition control.c:3589
void snd_ctl_elem_id_set_device(snd_ctl_elem_id_t *obj, unsigned int val)
Set device part for a CTL element identifier.
Definition control.c:2040
struct _snd_ctl_elem_info snd_ctl_elem_info_t
Definition control.h:156
int snd_ctl_ascii_elem_id_parse(snd_ctl_elem_id_t *dst, const char *str)
parse ASCII string as CTL element identifier
Definition ctlparse.c:272
void snd_ctl_elem_value_set_device(snd_ctl_elem_value_t *obj, unsigned int val)
Set the identifiers 'device' part within the given element value.
Definition control.c:3348
int snd_ctl_elem_info_is_writable(const snd_ctl_elem_info_t *obj)
Get info about writability from a CTL element id/info.
Definition control.c:2596
void snd_ctl_elem_id_set_interface(snd_ctl_elem_id_t *obj, snd_ctl_elem_iface_t val)
Set interface part for a CTL element identifier.
Definition control.c:2029
int snd_ctl_elem_value_malloc(snd_ctl_elem_value_t **ptr)
Allocate an invalid snd_ctl_elem_value_t on the heap.
Definition control.c:3140
int snd_ctl_convert_from_dB(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, long db_gain, long *value, int xdir)
Convert from dB gain to the raw volume value on the given control element.
Definition tlv.c:499
unsigned int snd_ctl_elem_info_get_device(const snd_ctl_elem_info_t *obj)
Get device part of CTL element identifier of a CTL element id/info.
Definition control.c:2963
int snd_ctl_elem_tlv_command(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, const unsigned int *tlv)
Process structured data from given buffer for an element set.
Definition control.c:1142
int snd_ctl_elem_info_is_user(const snd_ctl_elem_info_t *obj)
Get info if it's a user element.
Definition control.c:2651
long long snd_ctl_elem_info_get_step64(const snd_ctl_elem_info_t *obj)
Get value step from a SND_CTL_ELEM_TYPE_INTEGER64 CTL element id/info.
Definition control.c:2789
const char * snd_ctl_elem_iface_name(snd_ctl_elem_iface_t iface)
get name of a CTL element related interface
Definition control.c:1671
int snd_ctl_elem_info_is_inactive(const snd_ctl_elem_info_t *obj)
Get info about status from a CTL element id/info.
Definition control.c:2618
const char * snd_ctl_elem_info_get_name(const snd_ctl_elem_info_t *obj)
Get name part of CTL element identifier of a CTL element id/info.
Definition control.c:2985
int snd_ctl_read(snd_ctl_t *ctl, snd_ctl_event_t *event)
Read an event.
Definition control.c:1304
void snd_ctl_card_info_clear(snd_ctl_card_info_t *obj)
Clear given card info object.
Definition control.c:2127
void snd_ctl_elem_value_set_index(snd_ctl_elem_value_t *obj, unsigned int val)
Set the identifiers 'index' part within the given element value.
Definition control.c:3390
void snd_ctl_elem_info_set_item(snd_ctl_elem_info_t *obj, unsigned int val)
Select item in a SND_CTL_ELEM_TYPE_ENUMERATED CTL element id/info.
Definition control.c:2813
const char * snd_ctl_card_info_get_components(const snd_ctl_card_info_t *obj)
Get the sound cards "components" property from the given info object.
Definition control.c:2236
long long snd_ctl_elem_value_get_integer64(const snd_ctl_elem_value_t *obj, unsigned int idx)
Get an element members value.
Definition control.c:3443
void snd_ctl_elem_info_set_name(snd_ctl_elem_info_t *obj, const char *val)
Set name part of CTL element identifier of a CTL element id/info.
Definition control.c:3062
void snd_ctl_elem_id_copy(snd_ctl_elem_id_t *dst, const snd_ctl_elem_id_t *src)
copy one snd_ctl_elem_id_t to another
Definition control.c:1876
unsigned int snd_ctl_elem_value_get_numid(const snd_ctl_elem_value_t *obj)
Get the identifiers 'numid' part from the given element value.
Definition control.c:3221
const char * snd_ctl_card_info_get_id(const snd_ctl_card_info_t *obj)
Get the sound card ID from the given info object.
Definition control.c:2166
unsigned int snd_ctl_elem_info_get_index(const snd_ctl_elem_info_t *obj)
Get index part of CTL element identifier of a CTL element id/info.
Definition control.c:2996
void snd_ctl_elem_info_set_interface(snd_ctl_elem_info_t *obj, snd_ctl_elem_iface_t val)
Set interface part of CTL element identifier of a CTL element id/info.
Definition control.c:3029
int snd_ctl_open_lconf(snd_ctl_t **ctl, const char *name, int mode, snd_config_t *lconf)
Opens a CTL using local configuration.
Definition control.c:1595
const char * snd_ctl_event_elem_get_name(const snd_ctl_event_t *obj)
Get name part of CTL element identifier for an element related event.
Definition control.c:1803
const char * snd_ctl_card_info_get_name(const snd_ctl_card_info_t *obj)
Get the sound card name from the given info object.
Definition control.c:2194
void snd_ctl_elem_info_clear(snd_ctl_elem_info_t *obj)
clear given snd_ctl_elem_info_t object
Definition control.c:2553
void snd_ctl_elem_info_get_id(const snd_ctl_elem_info_t *obj, snd_ctl_elem_id_t *ptr)
Get CTL element identifier of a CTL element id/info.
Definition control.c:2930
int snd_tlv_parse_dB_info(unsigned int *tlv, unsigned int tlv_size, unsigned int **db_tlvp)
Parse TLV stream and retrieve dB information.
Definition tlv.c:59
int snd_ctl_elem_list_alloc_space(snd_ctl_elem_list_t *obj, unsigned int entries)
allocate space for CTL element identifiers list
Definition control.c:1699
int snd_ctl_card_info_malloc(snd_ctl_card_info_t **ptr)
Allocate an invalid snd_ctl_card_info_t on the heap.
Definition control.c:2100
int snd_ctl_elem_info_malloc(snd_ctl_elem_info_t **ptr)
allocate an invalid snd_ctl_elem_info_t using standard malloc
Definition control.c:2531
unsigned int snd_ctl_elem_id_get_numid(const snd_ctl_elem_id_t *obj)
Get numeric identifier from a CTL element identifier.
Definition control.c:1952
int snd_card_get_longname(int card, char **name)
Obtain the card long name.
Definition cards.c:222
unsigned int snd_ctl_elem_id_get_device(const snd_ctl_elem_id_t *obj)
Get device part of a CTL element identifier.
Definition control.c:1974
int snd_ctl_elem_add_iec958(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id)
Create and add a user-defined control element of IEC958 type.
Definition control.c:970
void snd_ctl_elem_info_set_read_write(snd_ctl_elem_info_t *obj, int rval, int wval)
Set readability/writeability parameter of a CTL element id/info.
Definition control.c:3085
void snd_ctl_elem_value_copy(snd_ctl_elem_value_t *dst, const snd_ctl_elem_value_t *src)
Bitwise copy of a snd_ctl_elem_value_t value.
Definition control.c:3177
size_t snd_ctl_event_sizeof(void)
get size of snd_ctl_event_t
Definition control.c:2246
int snd_ctl_elem_tlv_read(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int *tlv, unsigned int tlv_size)
Read structured data from an element set to given buffer.
Definition control.c:1080
int snd_ctl_open(snd_ctl_t **ctl, const char *name, int mode)
Opens a sound card.
Definition control.c:1567
unsigned char snd_ctl_elem_value_get_byte(const snd_ctl_elem_value_t *obj, unsigned int idx)
Get an element members value.
Definition control.c:3479
const char * snd_ctl_elem_value_get_name(const snd_ctl_elem_value_t *obj)
Get the identifiers 'name' part from the given element value.
Definition control.c:3277
const char * snd_ctl_elem_list_get_name(const snd_ctl_elem_list_t *obj, unsigned int idx)
Get name part of CTL element identifier for an entry of a CTL element identifiers list.
Definition control.c:2497
size_t snd_ctl_card_info_sizeof(void)
get size of snd_ctl_card_info_t.
Definition control.c:2083
void snd_ctl_elem_value_clear(snd_ctl_elem_value_t *obj)
Clear given data of an element.
Definition control.c:3167
long long snd_ctl_elem_info_get_min64(const snd_ctl_elem_info_t *obj)
Get minimum value from a SND_CTL_ELEM_TYPE_INTEGER64 CTL element id/info.
Definition control.c:2765
unsigned int snd_ctl_elem_id_get_subdevice(const snd_ctl_elem_id_t *obj)
Get subdevice part of a CTL element identifier.
Definition control.c:1985
struct _snd_ctl_card_info snd_ctl_card_info_t
CTL card info container.
Definition control.h:79
void snd_ctl_card_info_free(snd_ctl_card_info_t *obj)
Free an snd_ctl_card_info_t previously allocated using snd_ctl_card_info_malloc().
Definition control.c:2115
int snd_tlv_convert_to_dB(unsigned int *tlv, long rangemin, long rangemax, long volume, long *db_gain)
Convert the given raw volume value to a dB gain.
Definition tlv.c:201
void snd_ctl_event_free(snd_ctl_event_t *obj)
frees a previously allocated snd_ctl_event_t
Definition control.c:2269
int snd_ctl_elem_read(snd_ctl_t *ctl, snd_ctl_elem_value_t *data)
Get CTL element value.
Definition control.c:1010
void snd_ctl_elem_id_set_index(snd_ctl_elem_id_t *obj, unsigned int val)
Set index part for a CTL element identifier.
Definition control.c:2073
snd_ctl_t * snd_async_handler_get_ctl(snd_async_handler_t *handler)
Return CTL handle related to an async handler.
Definition control.c:1389
snd_ctl_elem_iface_t snd_ctl_elem_id_get_interface(const snd_ctl_elem_id_t *obj)
Get interface part of a CTL element identifier.
Definition control.c:1963
size_t snd_ctl_elem_list_sizeof(void)
get size of snd_ctl_elem_list_t.
Definition control.c:2309
void snd_ctl_event_copy(snd_ctl_event_t *dst, const snd_ctl_event_t *src)
copy one snd_ctl_event_t to another
Definition control.c:2288
long snd_ctl_elem_info_get_max(const snd_ctl_elem_info_t *obj)
Get maximum value from a SND_CTL_ELEM_TYPE_INTEGER CTL element id/info.
Definition control.c:2741
int snd_ctl_get_dB_range(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, long *min, long *max)
Get the dB min/max values on the given control element.
Definition tlv.c:455
unsigned int snd_ctl_elem_list_get_numid(const snd_ctl_elem_list_t *obj, unsigned int idx)
Get CTL element numeric identifier for an entry of a CTL element identifiers list.
Definition control.c:2445
int snd_card_next(int *card)
Iterate over physical sound cards.
Definition cards.c:108
int snd_ctl_elem_remove(snd_ctl_t *ctl, snd_ctl_elem_id_t *id)
Remove an user CTL element.
Definition control.c:989
snd_ctl_elem_iface_t snd_ctl_elem_list_get_interface(const snd_ctl_elem_list_t *obj, unsigned int idx)
Get interface part of CTL element identifier for an entry of a CTL element identifiers list.
Definition control.c:2458
void snd_ctl_elem_list_get_id(const snd_ctl_elem_list_t *obj, unsigned int idx, snd_ctl_elem_id_t *ptr)
Get CTL element identifier for an entry of a CTL element identifiers list.
Definition control.c:2432
int snd_ctl_elem_info_is_tlv_commandable(const snd_ctl_elem_info_t *obj)
Get info about TLV command possibility from a CTL element id/info.
Definition control.c:2684
void snd_ctl_elem_info_copy(snd_ctl_elem_info_t *dst, const snd_ctl_elem_info_t *src)
copy one snd_ctl_elem_info_t to another
Definition control.c:2563
snd_ctl_event_type_t
Definition control.h:254
const char * snd_ctl_elem_info_get_item_name(const snd_ctl_elem_info_t *obj)
Get name for selected item in a SND_CTL_ELEM_TYPE_ENUMERATED CTL element id/info.
Definition control.c:2824
void snd_ctl_event_clear(snd_ctl_event_t *obj)
clear given snd_ctl_event_t object
Definition control.c:2278
unsigned int snd_ctl_elem_value_get_index(const snd_ctl_elem_value_t *obj)
Get the identifiers 'index' part from the given element value.
Definition control.c:3291
void snd_ctl_elem_value_set_name(snd_ctl_elem_value_t *obj, const char *val)
Set the identifiers 'name' part within the given element value.
Definition control.c:3376
void snd_ctl_elem_info_set_tlv_read_write(snd_ctl_elem_info_t *obj, int rval, int wval)
Set TLV readability/writeability parameter of a CTL element id/info.
Definition control.c:3099
int snd_ctl_elem_info_is_volatile(const snd_ctl_elem_info_t *obj)
Get info about notification feasibility from a CTL element id/info.
Definition control.c:2607
int snd_ctl_elem_info_is_owner(const snd_ctl_elem_info_t *obj)
Get info if I own an element.
Definition control.c:2640
int snd_ctl_wait(snd_ctl_t *ctl, int timeout)
Wait for a CTL to become ready (i.e. at least one event pending)
Definition control.c:1316
long long snd_ctl_elem_info_get_max64(const snd_ctl_elem_info_t *obj)
Get maximum value from a SND_CTL_ELEM_TYPE_INTEGER64 CTL element id/info.
Definition control.c:2777
void snd_ctl_elem_list_free_space(snd_ctl_elem_list_t *obj)
free previously allocated space for CTL element identifiers list
Definition control.c:1719
unsigned int snd_ctl_elem_list_get_subdevice(const snd_ctl_elem_list_t *obj, unsigned int idx)
Get subdevice part of CTL element identifier for an entry of a CTL element identifiers list.
Definition control.c:2484
void snd_ctl_elem_id_set_name(snd_ctl_elem_id_t *obj, const char *val)
Set name part for a CTL element identifier.
Definition control.c:2062
unsigned int snd_ctl_elem_value_get_subdevice(const snd_ctl_elem_value_t *obj)
Get the identifiers 'subdevice' part from the given element value.
Definition control.c:3263
void snd_ctl_event_elem_get_id(const snd_ctl_event_t *obj, snd_ctl_elem_id_t *ptr)
Get CTL element identifier for an element related event.
Definition control.c:1743
const char * snd_ctl_name(snd_ctl_t *ctl)
get identifier of CTL handle
Definition control.c:209
long snd_ctl_elem_info_get_step(const snd_ctl_elem_info_t *obj)
Get value step from a SND_CTL_ELEM_TYPE_INTEGER CTL element id/info.
Definition control.c:2753
void snd_ctl_elem_info_set_device(snd_ctl_elem_info_t *obj, unsigned int val)
Set device part of CTL element identifier of a CTL element id/info.
Definition control.c:3040
long snd_ctl_elem_value_get_integer(const snd_ctl_elem_value_t *obj, unsigned int idx)
Get an element members value.
Definition control.c:3425
void snd_ctl_elem_value_get_iec958(const snd_ctl_elem_value_t *obj, snd_aes_iec958_t *ptr)
Get an elements IEC958 data.
Definition control.c:3626
void snd_ctl_elem_value_set_enumerated(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned int val)
Set an element members value.
Definition control.c:3551
struct _snd_sctl snd_sctl_t
Definition control.h:369
void snd_ctl_elem_info_set_id(snd_ctl_elem_info_t *obj, const snd_ctl_elem_id_t *ptr)
Set CTL element identifier of a CTL element id/info.
Definition control.c:3007
void snd_ctl_elem_value_set_numid(snd_ctl_elem_value_t *obj, unsigned int val)
Set the identifiers 'numid' part within the given element value.
Definition control.c:3320
void snd_ctl_elem_info_free(snd_ctl_elem_info_t *obj)
frees a previously allocated snd_ctl_elem_info_t
Definition control.c:2544
void snd_ctl_elem_id_set_subdevice(snd_ctl_elem_id_t *obj, unsigned int val)
Set subdevice part for a CTL element identifier.
Definition control.c:2051
void snd_ctl_elem_list_free(snd_ctl_elem_list_t *obj)
frees a previously allocated snd_ctl_elem_list_t.
Definition control.c:2343
pid_t snd_ctl_elem_info_get_owner(const snd_ctl_elem_info_t *obj)
Get owner of a locked element.
Definition control.c:2707
struct _snd_ctl_elem_list snd_ctl_elem_list_t
Definition control.h:153
struct _snd_ctl_event snd_ctl_event_t
Definition control.h:213
const char * snd_ctl_elem_id_get_name(const snd_ctl_elem_id_t *obj)
Get name part of a CTL element identifier.
Definition control.c:1996
snd_ctl_type_t
Definition control.h:337
int snd_ctl_add_enumerated_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info, unsigned int element_count, unsigned int member_count, unsigned int items, const char *const labels[])
Create and add some user-defined control elements of enumerated type.
Definition control.c:765
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)
Create and add an user-defined control element of integer type.
Definition control.c:864
void snd_ctl_elem_value_set_boolean(snd_ctl_elem_value_t *obj, unsigned int idx, long val)
Set an element members value.
Definition control.c:3497
int snd_ctl_elem_id_malloc(snd_ctl_elem_id_t **ptr)
allocate an invalid snd_ctl_elem_id_t using standard malloc
Definition control.c:1844
snd_ctl_elem_iface_t snd_ctl_elem_value_get_interface(const snd_ctl_elem_value_t *obj)
Get the identifiers 'interface' part from the given element value.
Definition control.c:3235
int snd_ctl_elem_info(snd_ctl_t *ctl, snd_ctl_elem_info_t *info)
Get CTL element information.
Definition control.c:425
int snd_ctl_elem_value_get_boolean(const snd_ctl_elem_value_t *obj, unsigned int idx)
Get an element members value.
Definition control.c:3407
int snd_ctl_elem_id_compare_set(const snd_ctl_elem_id_t *id1, const snd_ctl_elem_id_t *id2)
compare one snd_ctl_elem_id_t to another
Definition control.c:1923
void snd_ctl_elem_value_set_subdevice(snd_ctl_elem_value_t *obj, unsigned int val)
Set the identifiers 'subdevice' part within the given element value.
Definition control.c:3362
unsigned int snd_ctl_elem_info_get_count(const snd_ctl_elem_info_t *obj)
Get number of value entries from a CTL element id/info.
Definition control.c:2718
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)
Create and add an user-defined control element of integer64 type.
Definition control.c:885
unsigned int snd_ctl_event_elem_get_subdevice(const snd_ctl_event_t *obj)
Get subdevice part of CTL element identifier for an element related event.
Definition control.c:1791
int snd_ctl_elem_tlv_write(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, const unsigned int *tlv)
Write structured data from given buffer to an element set.
Definition control.c:1117
int snd_ctl_card_info(snd_ctl_t *ctl, snd_ctl_card_info_t *info)
Get information about the sound card.
Definition control.c:385
void snd_ctl_elem_value_free(snd_ctl_elem_value_t *obj)
Free an snd_ctl_elem_value_t previously allocated using snd_ctl_elem_value_malloc().
Definition control.c:3155
int snd_ctl_elem_info_is_tlv_readable(const snd_ctl_elem_info_t *obj)
Get info about TLV readability from a CTL element id/info.
Definition control.c:2662
int snd_ctl_poll_descriptors(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int space)
get poll descriptors
Definition control.c:326
void snd_ctl_elem_value_set_id(snd_ctl_elem_value_t *obj, const snd_ctl_elem_id_t *ptr)
Set the element identifier within the given element value.
Definition control.c:3306
void snd_ctl_elem_info_set_subdevice(snd_ctl_elem_info_t *obj, unsigned int val)
Set subdevice part of CTL element identifier of a CTL element id/info.
Definition control.c:3051
int snd_ctl_convert_to_dB(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, long volume, long *db_gain)
Convert the volume value to dB on the given control element.
Definition tlv.c:476
int snd_ctl_poll_descriptors_revents(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents)
get returned events from poll descriptors
Definition control.c:349
int snd_ctl_subscribe_events(snd_ctl_t *ctl, int subscribe)
Ask to be informed about events (poll, snd_async_add_ctl_handler, snd_ctl_read)
Definition control.c:367
int snd_ctl_elem_list_malloc(snd_ctl_elem_list_t **ptr)
allocate a snd_ctl_elem_list_t using standard malloc.
Definition control.c:2322
const char * snd_ctl_elem_type_name(snd_ctl_elem_type_t type)
get name of a CTL element type
Definition control.c:1660
int snd_ctl_elem_list(snd_ctl_t *ctl, snd_ctl_elem_list_t *list)
Get a list of element identifiers.
Definition control.c:412
void snd_ctl_elem_list_copy(snd_ctl_elem_list_t *dst, const snd_ctl_elem_list_t *src)
copy one snd_ctl_elem_list_t to another.
Definition control.c:2374
const void * snd_ctl_elem_value_get_bytes(const snd_ctl_elem_value_t *obj)
Get the data stored within the element.
Definition control.c:3608
int snd_card_load(int card)
Try to load the driver for a card.
Definition cards.c:83
int snd_ctl_elem_info_is_readable(const snd_ctl_elem_info_t *obj)
Get info about readability from a CTL element id/info.
Definition control.c:2585
unsigned int snd_ctl_elem_info_get_items(const snd_ctl_elem_info_t *obj)
Get number of items available from a SND_CTL_ELEM_TYPE_ENUMERATED CTL element id/info.
Definition control.c:2801
void snd_ctl_elem_value_set_integer(snd_ctl_elem_value_t *obj, unsigned int idx, long val)
Set an element members value.
Definition control.c:3515
unsigned int snd_ctl_elem_info_get_numid(const snd_ctl_elem_info_t *obj)
Get element numeric identifier of a CTL element id/info.
Definition control.c:2941
snd_ctl_elem_iface_t snd_ctl_elem_info_get_interface(const snd_ctl_elem_info_t *obj)
Get interface part of CTL element identifier of a CTL element id/info.
Definition control.c:2952
unsigned int snd_ctl_elem_value_get_device(const snd_ctl_elem_value_t *obj)
Get the identifiers 'device' part from the given element value.
Definition control.c:3249
void snd_ctl_card_info_copy(snd_ctl_card_info_t *dst, const snd_ctl_card_info_t *src)
Bitwise copy of a snd_ctl_card_info_t object.
Definition control.c:2138
snd_ctl_elem_type_t
Definition control.h:216
long snd_ctl_elem_info_get_min(const snd_ctl_elem_info_t *obj)
Get minimum value from a SND_CTL_ELEM_TYPE_INTEGER CTL element id/info.
Definition control.c:2729
int snd_ctl_elem_write(snd_ctl_t *ctl, snd_ctl_elem_value_t *data)
Set CTL element value.
Definition control.c:1031
void snd_ctl_elem_info_set_index(snd_ctl_elem_info_t *obj, unsigned int val)
Set index part of CTL element identifier of a CTL element id/info.
Definition control.c:3073
int snd_ctl_add_integer_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info, unsigned int element_count, unsigned int member_count, long min, long max, long step)
Create and add some user-defined control elements of integer type.
Definition control.c:548
int snd_ctl_elem_info_is_tlv_writable(const snd_ctl_elem_info_t *obj)
Get info about TLV writeability from a CTL element id/info.
Definition control.c:2673
int snd_tlv_get_dB_range(unsigned int *tlv, long rangemin, long rangemax, long *min, long *max)
Get the dB min/max values.
Definition tlv.c:129
void snd_ctl_elem_id_clear(snd_ctl_elem_id_t *obj)
clear given snd_ctl_elem_id_t object
Definition control.c:1866
const char * snd_ctl_card_info_get_driver(const snd_ctl_card_info_t *obj)
Get the sound card driver from the given info object.
Definition control.c:2180
int snd_card_get_name(int card, char **name)
Obtain the card name.
Definition cards.c:192
void snd_ctl_elem_value_get_id(const snd_ctl_elem_value_t *obj, snd_ctl_elem_id_t *ptr)
Get the element identifier from the given element value.
Definition control.c:3207
int snd_ctl_elem_value_compare(snd_ctl_elem_value_t *left, const snd_ctl_elem_value_t *right)
Compare two snd_ctl_elem_value_t values, bytewise.
Definition control.c:3191
int snd_ctl_elem_add_boolean(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count)
Create and add an user-defined control element of boolean type.
Definition control.c:906
struct _snd_ctl_elem_id snd_ctl_elem_id_t
Definition control.h:82
int snd_ctl_poll_descriptors_count(snd_ctl_t *ctl)
get count of poll descriptors for CTL handle
Definition control.c:309
void snd_ctl_elem_info_set_inactive(snd_ctl_elem_info_t *obj, int val)
Set inactive parameter of a CTL element id/info.
Definition control.c:3112
void snd_ctl_elem_list_set_offset(snd_ctl_elem_list_t *obj, unsigned int val)
Set index of first wanted CTL element identifier in a CTL element identifiers list.
Definition control.c:2385
unsigned int snd_ctl_event_elem_get_numid(const snd_ctl_event_t *obj)
Get element numeric identifier for an element related event.
Definition control.c:1755
unsigned int snd_ctl_elem_info_get_subdevice(const snd_ctl_elem_info_t *obj)
Get subdevice part of CTL element identifier of a CTL element id/info.
Definition control.c:2974
int snd_ctl_get_power_state(snd_ctl_t *ctl, unsigned int *state)
Get actual Power State.
Definition control.c:1290
int snd_ctl_elem_id_compare_numid(const snd_ctl_elem_id_t *id1, const snd_ctl_elem_id_t *id2)
compare one snd_ctl_elem_id_t to another using numid
Definition control.c:1893
unsigned int snd_ctl_event_elem_get_index(const snd_ctl_event_t *obj)
Get index part of CTL element identifier for an element related event.
Definition control.c:1815
unsigned int snd_ctl_elem_list_get_device(const snd_ctl_elem_list_t *obj, unsigned int idx)
Get the device part of CTL element identifier for an entry of a CTL element identifiers list.
Definition control.c:2471
unsigned int snd_ctl_elem_id_get_index(const snd_ctl_elem_id_t *obj)
Get index part of a CTL element identifier.
Definition control.c:2007
snd_ctl_elem_iface_t snd_ctl_event_elem_get_interface(const snd_ctl_event_t *obj)
Get interface part of CTL element identifier for an element related event.
Definition control.c:1767
const char * snd_ctl_card_info_get_longname(const snd_ctl_card_info_t *obj)
Get the sound cards long name from the given info object.
Definition control.c:2208
void snd_ctl_elem_value_set_integer64(snd_ctl_elem_value_t *obj, unsigned int idx, long long val)
Set an element members value.
Definition control.c:3533
void snd_ctl_elem_value_set_iec958(snd_ctl_elem_value_t *obj, const snd_aes_iec958_t *ptr)
Set an elements IEC958 data.
Definition control.c:3644
int snd_ctl_elem_info_set_dimension(snd_ctl_elem_info_t *info, const int dimension[4])
Set width to a specified dimension level of given element information.
Definition control.c:2903
size_t snd_ctl_elem_id_sizeof(void)
get size of snd_ctl_elem_id_t
Definition control.c:1834
int snd_ctl_add_bytes_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info, unsigned int element_count, unsigned int member_count)
Create and add some user-defined control elements of bytes type.
Definition control.c:845
unsigned int snd_ctl_elem_value_get_enumerated(const snd_ctl_elem_value_t *obj, unsigned int idx)
Get an element members value.
Definition control.c:3461
int snd_ctl_close(snd_ctl_t *ctl)
close CTL handle
Definition control.c:236
int snd_ctl_elem_unlock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id)
Unlock CTL element.
Definition control.c:1168
unsigned int snd_ctl_event_elem_get_device(const snd_ctl_event_t *obj)
Get device part of CTL element identifier for an element related event.
Definition control.c:1779
const char * snd_ctl_event_type_name(snd_ctl_event_type_t type)
get name of a CTL event type
Definition control.c:1682
const char * snd_ctl_card_info_get_mixername(const snd_ctl_card_info_t *obj)
Get the sound card mixer name from the given info object.
Definition control.c:2222
snd_ctl_type_t snd_ctl_type(snd_ctl_t *ctl)
get type of CTL handle
Definition control.c:222
int snd_ctl_add_boolean_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info, unsigned int element_count, unsigned int member_count)
Create and add some user-defined control elements of boolean type.
Definition control.c:708
@ SND_CTL_ELEM_IFACE_CARD
Definition control.h:237
@ SND_CTL_ELEM_IFACE_PCM
Definition control.h:243
@ SND_CTL_ELEM_IFACE_SEQUENCER
Definition control.h:249
@ SND_CTL_ELEM_IFACE_RAWMIDI
Definition control.h:245
@ SND_CTL_ELEM_IFACE_HWDEP
Definition control.h:239
@ SND_CTL_ELEM_IFACE_TIMER
Definition control.h:247
@ SND_CTL_ELEM_IFACE_MIXER
Definition control.h:241
@ SND_CTL_EVENT_ELEM
Definition control.h:256
@ SND_CTL_TYPE_INET
Definition control.h:343
@ SND_CTL_TYPE_EXT
Definition control.h:345
@ SND_CTL_TYPE_REMAP
Definition control.h:347
@ SND_CTL_TYPE_HW
Definition control.h:339
@ SND_CTL_TYPE_SHM
Definition control.h:341
@ SND_CTL_ELEM_TYPE_INTEGER
Definition control.h:222
@ SND_CTL_ELEM_TYPE_NONE
Definition control.h:218
@ SND_CTL_ELEM_TYPE_INTEGER64
Definition control.h:230
@ SND_CTL_ELEM_TYPE_IEC958
Definition control.h:228
@ SND_CTL_ELEM_TYPE_BOOLEAN
Definition control.h:220
@ SND_CTL_ELEM_TYPE_ENUMERATED
Definition control.h:224
@ SND_CTL_ELEM_TYPE_BYTES
Definition control.h:226
struct _snd_async_handler snd_async_handler_t
Internal structure for an async notification client handler.
Definition global.h:115
void(* snd_async_callback_t)(snd_async_handler_t *handler)
Async notification callback.
Definition global.h:122
int snd_hctl_handle_events(snd_hctl_t *hctl)
Handle pending HCTL events invoking callbacks.
Definition hcontrol.c:779
snd_hctl_elem_t * snd_hctl_find_elem(snd_hctl_t *hctl, const snd_ctl_elem_id_t *id)
Search an HCTL element.
Definition hcontrol.c:551
snd_hctl_elem_t * snd_hctl_last_elem(snd_hctl_t *hctl)
get last element for an HCTL
Definition hcontrol.c:511
const char * snd_hctl_name(snd_hctl_t *hctl)
get identifier of HCTL handle
Definition hcontrol.c:130
unsigned int snd_hctl_get_count(snd_hctl_t *hctl)
Get number of loaded elements for an HCTL.
Definition hcontrol.c:662
void * snd_hctl_get_callback_private(snd_hctl_t *hctl)
Get callback private value for an HCTL.
Definition hcontrol.c:651
struct _snd_hctl snd_hctl_t
Definition control.h:702
int snd_hctl_free(snd_hctl_t *hctl)
free HCTL loaded elements
Definition hcontrol.c:402
int snd_hctl_open(snd_hctl_t **hctl, const char *name, int mode)
Opens an HCTL.
Definition hcontrol.c:70
int snd_hctl_wait(snd_hctl_t *hctl, int timeout)
Wait for a HCTL to become ready (i.e. at least one event pending)
Definition hcontrol.c:675
int snd_hctl_poll_descriptors_count(snd_hctl_t *hctl)
get count of poll descriptors for HCTL handle
Definition hcontrol.c:168
int snd_hctl_nonblock(snd_hctl_t *hctl, int nonblock)
set nonblock mode
Definition hcontrol.c:142
int snd_hctl_elem_tlv_read(snd_hctl_elem_t *elem, unsigned int *tlv, unsigned int tlv_size)
Get TLV value for an HCTL element.
Definition hcontrol.c:853
int snd_hctl_open_ctl(snd_hctl_t **hctlp, snd_ctl_t *ctl)
Opens an HCTL.
Definition hcontrol.c:89
snd_hctl_t * snd_hctl_elem_get_hctl(snd_hctl_elem_t *elem)
Get HCTL handle for an HCTL element.
Definition hcontrol.c:898
int snd_hctl_set_compare(snd_hctl_t *hctl, snd_hctl_compare_t hsort)
Change HCTL compare function and reorder elements.
Definition hcontrol.c:448
int(* snd_hctl_callback_t)(snd_hctl_t *hctl, unsigned int mask, snd_hctl_elem_t *elem)
HCTL callback function.
Definition control.h:721
int(* snd_hctl_compare_t)(const snd_hctl_elem_t *e1, const snd_hctl_elem_t *e2)
Compare function for sorting HCTL elements.
Definition control.h:710
int(* snd_hctl_elem_callback_t)(snd_hctl_elem_t *elem, unsigned int mask)
HCTL element callback function.
Definition control.h:730
int snd_hctl_load(snd_hctl_t *hctl)
Load an HCTL with all elements and sort them.
Definition hcontrol.c:565
int snd_hctl_poll_descriptors_revents(snd_hctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents)
get returned events from poll descriptors
Definition hcontrol.c:195
int snd_hctl_poll_descriptors(snd_hctl_t *hctl, struct pollfd *pfds, unsigned int space)
get poll descriptors
Definition hcontrol.c:181
int snd_hctl_elem_read(snd_hctl_elem_t *elem, snd_ctl_elem_value_t *value)
Get value for an HCTL element.
Definition hcontrol.c:820
unsigned int snd_hctl_elem_get_subdevice(const snd_hctl_elem_t *obj)
Get subdevice part of CTL element identifier of a CTL element id/value.
Definition hcontrol.c:953
snd_hctl_elem_t * snd_hctl_elem_next(snd_hctl_elem_t *elem)
get next HCTL element
Definition hcontrol.c:524
snd_ctl_t * snd_hctl_ctl(snd_hctl_t *hctl)
Get a ctl handle associated to the given hctl handle.
Definition hcontrol.c:724
const char * snd_hctl_elem_get_name(const snd_hctl_elem_t *obj)
Get name part of CTL element identifier of a CTL element id/value.
Definition hcontrol.c:964
void snd_hctl_set_callback(snd_hctl_t *hctl, snd_hctl_callback_t callback)
Set callback function for an HCTL.
Definition hcontrol.c:629
unsigned int snd_hctl_elem_get_index(const snd_hctl_elem_t *obj)
Get index part of CTL element identifier of a CTL element id/value.
Definition hcontrol.c:975
void snd_hctl_elem_set_callback_private(snd_hctl_elem_t *obj, void *val)
Set callback private value for an HCTL element.
Definition hcontrol.c:997
int snd_hctl_compare_fast(const snd_hctl_elem_t *c1, const snd_hctl_elem_t *c2)
A "don't care" fast compare functions that may be used with snd_hctl_set_compare.
Definition hcontrol.c:462
void * snd_hctl_elem_get_callback_private(const snd_hctl_elem_t *obj)
Get callback private value for an HCTL element.
Definition hcontrol.c:1008
int snd_hctl_elem_tlv_write(snd_hctl_elem_t *elem, const unsigned int *tlv)
Set TLV value for an HCTL element.
Definition hcontrol.c:869
snd_ctl_elem_iface_t snd_hctl_elem_get_interface(const snd_hctl_elem_t *obj)
Get interface part of CTL element identifier of a CTL element id/value.
Definition hcontrol.c:931
void snd_hctl_elem_get_id(const snd_hctl_elem_t *obj, snd_ctl_elem_id_t *ptr)
Get CTL element identifier of a CTL element id/value.
Definition hcontrol.c:909
snd_hctl_elem_t * snd_hctl_elem_prev(snd_hctl_elem_t *elem)
get previous HCTL element
Definition hcontrol.c:537
void snd_hctl_elem_set_callback(snd_hctl_elem_t *obj, snd_hctl_elem_callback_t val)
Set callback function for an HCTL element.
Definition hcontrol.c:986
struct _snd_hctl_elem snd_hctl_elem_t
Definition control.h:699
int snd_hctl_elem_info(snd_hctl_elem_t *elem, snd_ctl_elem_info_t *info)
Get information for an HCTL element.
Definition hcontrol.c:805
unsigned int snd_hctl_elem_get_numid(const snd_hctl_elem_t *obj)
Get element numeric identifier of a CTL element id/value.
Definition hcontrol.c:920
void snd_hctl_set_callback_private(snd_hctl_t *hctl, void *data)
Set callback private value for an HCTL.
Definition hcontrol.c:640
unsigned int snd_hctl_elem_get_device(const snd_hctl_elem_t *obj)
Get device part of CTL element identifier of a CTL element id/value.
Definition hcontrol.c:942
int snd_hctl_close(snd_hctl_t *hctl)
close HCTL handle
Definition hcontrol.c:111
int snd_hctl_elem_tlv_command(snd_hctl_elem_t *elem, const unsigned int *tlv)
Set TLV value for an HCTL element.
Definition hcontrol.c:885
snd_hctl_elem_t * snd_hctl_first_elem(snd_hctl_t *hctl)
get first element for an HCTL
Definition hcontrol.c:498
int snd_hctl_elem_write(snd_hctl_elem_t *elem, snd_ctl_elem_value_t *value)
Set value for an HCTL element.
Definition hcontrol.c:837
struct _snd_hwdep_info snd_hwdep_info_t
Definition hwdep.h:45
struct _snd_pcm_info snd_pcm_info_t
Definition pcm.h:48
struct _snd_rawmidi_info snd_rawmidi_info_t
Definition rawmidi.h:45
int snd_sctl_remove(snd_sctl_t *handle)
Remove (restore) previous values from control elements.
Definition setup.c:181
int snd_sctl_build(snd_sctl_t **ctl, snd_ctl_t *handle, snd_config_t *config, snd_config_t *private_data, int mode)
Build setup control handle.
Definition setup.c:603
int snd_sctl_install(snd_sctl_t *handle)
Install given values to control elements.
Definition setup.c:83
int snd_sctl_free(snd_sctl_t *handle)
Free setup control handle.
Definition setup.c:644
void * ptr
Definition seq_event.h:1
unsigned char pad
Definition control.h:49