Modules | |
High level Control Interface | |
Setup Control Interface | |
Data Structures | |
struct | snd_aes_iec958 |
Defines | |
#define | SND_CONTROL_DLSYM_VERSION _dlsym_control_001 |
#define | SND_CTL_EVENT_MASK_REMOVE |
#define | SND_CTL_EVENT_MASK_VALUE |
#define | SND_CTL_EVENT_MASK_INFO |
#define | SND_CTL_EVENT_MASK_ADD |
#define | SND_CTL_EVENT_MASK_TLV |
#define | SND_CTL_NAME_NONE "" |
#define | SND_CTL_NAME_PLAYBACK "Playback " |
#define | SND_CTL_NAME_CAPTURE "Capture " |
#define | SND_CTL_NAME_IEC958_NONE "" |
#define | SND_CTL_NAME_IEC958_SWITCH "Switch" |
#define | SND_CTL_NAME_IEC958_VOLUME "Volume" |
#define | SND_CTL_NAME_IEC958_DEFAULT "Default" |
#define | SND_CTL_NAME_IEC958_MASK "Mask" |
#define | SND_CTL_NAME_IEC958_CON_MASK "Con Mask" |
#define | SND_CTL_NAME_IEC958_PRO_MASK "Pro Mask" |
#define | SND_CTL_NAME_IEC958_PCM_STREAM "PCM Stream" |
#define | SND_CTL_NAME_IEC958(expl, direction, what) "IEC958 " expl SND_CTL_NAME_##direction SND_CTL_NAME_IEC958_##what |
#define | SND_CTL_POWER_MASK 0xff00 |
#define | SND_CTL_POWER_D0 0x0000 |
#define | SND_CTL_POWER_D1 0x0100 |
#define | SND_CTL_POWER_D2 0x0200 |
#define | SND_CTL_POWER_D3 0x0300 |
#define | SND_CTL_POWER_D3hot (SND_CTL_POWER_D3|0x0000) |
#define | SND_CTL_POWER_D3cold (SND_CTL_POWER_D3|0x0001) |
#define | SND_CTL_TLVT_CONTAINER 0x0000 |
#define | SND_CTL_TLVT_DB_SCALE 0x0001 |
#define | SND_CTL_TLVT_DB_LINEAR 0x0002 |
#define | SND_CTL_TLVT_DB_RANGE 0x0003 |
#define | SND_CTL_TLV_DB_GAIN_MUTE -9999999 |
#define | SND_CTL_NONBLOCK |
#define | SND_CTL_ASYNC |
#define | SND_CTL_READONLY |
#define | SND_SCTL_NOFREE 0x0001 |
#define | snd_ctl_elem_id_alloca(ptr) |
allocate an invalid snd_ctl_elem_id_t using standard alloca | |
#define | snd_ctl_card_info_alloca(ptr) |
allocate an invalid snd_ctl_card_info_t using standard alloca | |
#define | snd_ctl_event_alloca(ptr) |
allocate an invalid snd_ctl_event_t using standard alloca | |
#define | snd_ctl_elem_list_alloca(ptr) |
allocate an invalid snd_ctl_elem_list_t using standard alloca | |
#define | snd_ctl_elem_info_alloca(ptr) |
allocate an invalid snd_ctl_elem_info_t using standard alloca | |
#define | snd_ctl_elem_value_alloca(ptr) |
allocate an invalid snd_ctl_elem_value_t using standard alloca | |
Typedefs | |
typedef snd_aes_iec958 | snd_aes_iec958_t |
typedef _snd_ctl_card_info | snd_ctl_card_info_t |
typedef _snd_ctl_elem_id | snd_ctl_elem_id_t |
typedef _snd_ctl_elem_list | snd_ctl_elem_list_t |
typedef _snd_ctl_elem_info | snd_ctl_elem_info_t |
typedef _snd_ctl_elem_value | snd_ctl_elem_value_t |
typedef _snd_ctl_event | snd_ctl_event_t |
typedef enum _snd_ctl_elem_type | snd_ctl_elem_type_t |
typedef enum _snd_ctl_elem_iface | snd_ctl_elem_iface_t |
typedef enum _snd_ctl_event_type | snd_ctl_event_type_t |
typedef enum _snd_ctl_type | snd_ctl_type_t |
typedef _snd_ctl | snd_ctl_t |
typedef _snd_sctl | snd_sctl_t |
Enumerations | |
enum | _snd_ctl_elem_type { SND_CTL_ELEM_TYPE_NONE = 0, SND_CTL_ELEM_TYPE_BOOLEAN, SND_CTL_ELEM_TYPE_INTEGER, SND_CTL_ELEM_TYPE_ENUMERATED, SND_CTL_ELEM_TYPE_BYTES, SND_CTL_ELEM_TYPE_IEC958, SND_CTL_ELEM_TYPE_INTEGER64, SND_CTL_ELEM_TYPE_LAST = SND_CTL_ELEM_TYPE_INTEGER64 } |
enum | _snd_ctl_elem_iface { SND_CTL_ELEM_IFACE_CARD = 0, SND_CTL_ELEM_IFACE_HWDEP, SND_CTL_ELEM_IFACE_MIXER, SND_CTL_ELEM_IFACE_PCM, SND_CTL_ELEM_IFACE_RAWMIDI, SND_CTL_ELEM_IFACE_TIMER, SND_CTL_ELEM_IFACE_SEQUENCER, SND_CTL_ELEM_IFACE_LAST = SND_CTL_ELEM_IFACE_SEQUENCER } |
enum | _snd_ctl_event_type { SND_CTL_EVENT_ELEM = 0, SND_CTL_EVENT_LAST = SND_CTL_EVENT_ELEM } |
enum | _snd_ctl_type { SND_CTL_TYPE_HW, SND_CTL_TYPE_SHM, SND_CTL_TYPE_INET, SND_CTL_TYPE_EXT } |
Functions | |
int | snd_card_load (int card) |
Try to load the driver for a card. | |
int | snd_card_next (int *card) |
Try to determine the next card. | |
int | snd_card_get_index (const char *name) |
Convert card string to an integer value. | |
int | snd_card_get_name (int card, char **name) |
Obtain the card name. | |
int | snd_card_get_longname (int card, char **name) |
Obtain the card long name. | |
int | snd_ctl_open (snd_ctl_t **ctl, const char *name, int mode) |
Opens a CTL. | |
int | snd_ctl_open_lconf (snd_ctl_t **ctl, const char *name, int mode, snd_config_t *lconf) |
Opens a CTL using local configuration. | |
int | snd_ctl_close (snd_ctl_t *ctl) |
close CTL handle | |
int | snd_ctl_nonblock (snd_ctl_t *ctl, int nonblock) |
set nonblock mode | |
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. | |
snd_ctl_t * | snd_async_handler_get_ctl (snd_async_handler_t *handler) |
Return CTL handle related to an async handler. | |
int | snd_ctl_poll_descriptors_count (snd_ctl_t *ctl) |
get count of poll descriptors for CTL handle | |
int | snd_ctl_poll_descriptors (snd_ctl_t *ctl, struct pollfd *pfds, unsigned int space) |
get poll descriptors | |
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 | |
int | snd_ctl_subscribe_events (snd_ctl_t *ctl, int subscribe) |
Ask to be informed about events (poll, snd_ctl_async, snd_ctl_read). | |
int | snd_ctl_card_info (snd_ctl_t *ctl, snd_ctl_card_info_t *info) |
Get card related information. | |
int | snd_ctl_elem_list (snd_ctl_t *ctl, snd_ctl_elem_list_t *list) |
Get a list of element identifiers. | |
int | snd_ctl_elem_info (snd_ctl_t *ctl, snd_ctl_elem_info_t *info) |
Get CTL element information. | |
int | snd_ctl_elem_read (snd_ctl_t *ctl, snd_ctl_elem_value_t *value) |
Get CTL element value. | |
int | snd_ctl_elem_write (snd_ctl_t *ctl, snd_ctl_elem_value_t *value) |
Set CTL element value. | |
int | snd_ctl_elem_lock (snd_ctl_t *ctl, snd_ctl_elem_id_t *id) |
Lock CTL element. | |
int | snd_ctl_elem_unlock (snd_ctl_t *ctl, snd_ctl_elem_id_t *id) |
Unlock CTL element. | |
int | snd_ctl_elem_tlv_read (snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int *tlv, unsigned int tlv_size) |
Get CTL element TLV value. | |
int | snd_ctl_elem_tlv_write (snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, const unsigned int *tlv) |
Set CTL element TLV value. | |
int | snd_ctl_elem_tlv_command (snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, const unsigned int *tlv) |
Process CTL element TLV command. | |
int | snd_ctl_hwdep_next_device (snd_ctl_t *ctl, int *device) |
Get next hardware dependent device number. | |
int | snd_ctl_hwdep_info (snd_ctl_t *ctl, snd_hwdep_info_t *info) |
Get info about a hardware dependent device. | |
int | snd_ctl_pcm_next_device (snd_ctl_t *ctl, int *device) |
Get next PCM device number. | |
int | snd_ctl_pcm_info (snd_ctl_t *ctl, snd_pcm_info_t *info) |
Get info about a PCM device. | |
int | snd_ctl_pcm_prefer_subdevice (snd_ctl_t *ctl, int subdev) |
Set preferred PCM subdevice number of successive PCM open. | |
int | snd_ctl_rawmidi_next_device (snd_ctl_t *ctl, int *device) |
Get next RawMidi device number. | |
int | snd_ctl_rawmidi_info (snd_ctl_t *ctl, snd_rawmidi_info_t *info) |
Get info about a RawMidi device. | |
int | snd_ctl_rawmidi_prefer_subdevice (snd_ctl_t *ctl, int subdev) |
Set preferred RawMidi subdevice number of successive RawMidi open. | |
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. | |
int | snd_ctl_get_power_state (snd_ctl_t *ctl, unsigned int *state) |
Get actual Power State. | |
int | snd_ctl_read (snd_ctl_t *ctl, snd_ctl_event_t *event) |
Read an event. | |
int | snd_ctl_wait (snd_ctl_t *ctl, int timeout) |
Wait for a CTL to become ready (i.e. at least one event pending). | |
const char * | snd_ctl_name (snd_ctl_t *ctl) |
get identifier of CTL handle | |
snd_ctl_type_t | snd_ctl_type (snd_ctl_t *ctl) |
get type of CTL handle | |
const char * | snd_ctl_elem_type_name (snd_ctl_elem_type_t type) |
get name of a CTL element type | |
const char * | snd_ctl_elem_iface_name (snd_ctl_elem_iface_t iface) |
get name of a CTL element related interface | |
const char * | snd_ctl_event_type_name (snd_ctl_event_type_t type) |
get name of a CTL event type | |
unsigned int | snd_ctl_event_elem_get_mask (const snd_ctl_event_t *obj) |
Get event mask for an element related event. | |
unsigned int | snd_ctl_event_elem_get_numid (const snd_ctl_event_t *obj) |
Get element numeric identifier for an element related event. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
int | snd_ctl_elem_list_alloc_space (snd_ctl_elem_list_t *obj, unsigned int entries) |
allocate space for CTL element identifiers list | |
void | snd_ctl_elem_list_free_space (snd_ctl_elem_list_t *obj) |
free previously allocated space for CTL element identifiers list | |
size_t | snd_ctl_elem_id_sizeof (void) |
get size of snd_ctl_elem_id_t | |
int | snd_ctl_elem_id_malloc (snd_ctl_elem_id_t **ptr) |
allocate an invalid snd_ctl_elem_id_t using standard malloc | |
void | snd_ctl_elem_id_free (snd_ctl_elem_id_t *obj) |
frees a previously allocated snd_ctl_elem_id_t | |
void | snd_ctl_elem_id_clear (snd_ctl_elem_id_t *obj) |
clear given snd_ctl_elem_id_t object | |
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 | |
unsigned int | snd_ctl_elem_id_get_numid (const snd_ctl_elem_id_t *obj) |
Get numeric identifier from a CTL element identifier. | |
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. | |
unsigned int | snd_ctl_elem_id_get_device (const snd_ctl_elem_id_t *obj) |
Get device part of a CTL element identifier. | |
unsigned int | snd_ctl_elem_id_get_subdevice (const snd_ctl_elem_id_t *obj) |
Get subdevice part of a CTL element identifier. | |
const char * | snd_ctl_elem_id_get_name (const snd_ctl_elem_id_t *obj) |
Get name part of a CTL element identifier. | |
unsigned int | snd_ctl_elem_id_get_index (const snd_ctl_elem_id_t *obj) |
Get index part of a CTL element identifier. | |
void | snd_ctl_elem_id_set_numid (snd_ctl_elem_id_t *obj, unsigned int val) |
Set numeric identifier for a CTL element identifier. | |
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. | |
void | snd_ctl_elem_id_set_device (snd_ctl_elem_id_t *obj, unsigned int val) |
Set device part for a CTL element identifier. | |
void | snd_ctl_elem_id_set_subdevice (snd_ctl_elem_id_t *obj, unsigned int val) |
Set subdevice part for a CTL element identifier. | |
void | snd_ctl_elem_id_set_name (snd_ctl_elem_id_t *obj, const char *val) |
Set name part for a CTL element identifier. | |
void | snd_ctl_elem_id_set_index (snd_ctl_elem_id_t *obj, unsigned int val) |
Set index part for a CTL element identifier. | |
size_t | snd_ctl_card_info_sizeof (void) |
get size of snd_ctl_card_info_t | |
int | snd_ctl_card_info_malloc (snd_ctl_card_info_t **ptr) |
allocate an invalid snd_ctl_card_info_t using standard malloc | |
void | snd_ctl_card_info_free (snd_ctl_card_info_t *obj) |
frees a previously allocated snd_ctl_card_info_t | |
void | snd_ctl_card_info_clear (snd_ctl_card_info_t *obj) |
clear given snd_ctl_card_info_t object | |
void | snd_ctl_card_info_copy (snd_ctl_card_info_t *dst, const snd_ctl_card_info_t *src) |
copy one snd_ctl_card_info_t to another | |
int | snd_ctl_card_info_get_card (const snd_ctl_card_info_t *obj) |
Get card number from a CTL card info. | |
const char * | snd_ctl_card_info_get_id (const snd_ctl_card_info_t *obj) |
Get card identifier from a CTL card info. | |
const char * | snd_ctl_card_info_get_driver (const snd_ctl_card_info_t *obj) |
Get card driver name from a CTL card info. | |
const char * | snd_ctl_card_info_get_name (const snd_ctl_card_info_t *obj) |
Get card name from a CTL card info. | |
const char * | snd_ctl_card_info_get_longname (const snd_ctl_card_info_t *obj) |
Get card long name from a CTL card info. | |
const char * | snd_ctl_card_info_get_mixername (const snd_ctl_card_info_t *obj) |
Get card mixer name from a CTL card info. | |
const char * | snd_ctl_card_info_get_components (const snd_ctl_card_info_t *obj) |
Get card component list from a CTL card info. | |
size_t | snd_ctl_event_sizeof (void) |
get size of snd_ctl_event_t | |
int | snd_ctl_event_malloc (snd_ctl_event_t **ptr) |
allocate an invalid snd_ctl_event_t using standard malloc | |
void | snd_ctl_event_free (snd_ctl_event_t *obj) |
frees a previously allocated snd_ctl_event_t | |
void | snd_ctl_event_clear (snd_ctl_event_t *obj) |
clear given snd_ctl_event_t object | |
void | snd_ctl_event_copy (snd_ctl_event_t *dst, const snd_ctl_event_t *src) |
copy one snd_ctl_event_t to another | |
snd_ctl_event_type_t | snd_ctl_event_get_type (const snd_ctl_event_t *obj) |
Get type of a CTL event. | |
size_t | snd_ctl_elem_list_sizeof (void) |
get size of snd_ctl_elem_list_t | |
int | snd_ctl_elem_list_malloc (snd_ctl_elem_list_t **ptr) |
allocate an invalid snd_ctl_elem_list_t using standard malloc | |
void | snd_ctl_elem_list_free (snd_ctl_elem_list_t *obj) |
frees a previously allocated snd_ctl_elem_list_t | |
void | snd_ctl_elem_list_clear (snd_ctl_elem_list_t *obj) |
clear given snd_ctl_elem_list_t object | |
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 | |
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. | |
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. | |
unsigned int | snd_ctl_elem_list_get_count (const snd_ctl_elem_list_t *obj) |
Get total count of elements present in CTL device (information present in every filled CTL element identifiers list). | |
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. | |
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. | |
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. | |
unsigned int | snd_ctl_elem_list_get_device (const snd_ctl_elem_list_t *obj, unsigned int idx) |
Get device part of CTL element identifier for an entry of a CTL element identifiers list. | |
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. | |
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. | |
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. | |
size_t | snd_ctl_elem_info_sizeof (void) |
get size of snd_ctl_elem_info_t | |
int | snd_ctl_elem_info_malloc (snd_ctl_elem_info_t **ptr) |
allocate an invalid snd_ctl_elem_info_t using standard malloc | |
void | snd_ctl_elem_info_free (snd_ctl_elem_info_t *obj) |
frees a previously allocated snd_ctl_elem_info_t | |
void | snd_ctl_elem_info_clear (snd_ctl_elem_info_t *obj) |
clear given snd_ctl_elem_info_t object | |
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 | |
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. | |
int | snd_ctl_elem_info_is_readable (const snd_ctl_elem_info_t *obj) |
Get info about readability from a CTL element id/info. | |
int | snd_ctl_elem_info_is_writable (const snd_ctl_elem_info_t *obj) |
Get info about writability from a CTL element id/info. | |
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. | |
int | snd_ctl_elem_info_is_inactive (const snd_ctl_elem_info_t *obj) |
Get info about status from a CTL element id/info. | |
int | snd_ctl_elem_info_is_locked (const snd_ctl_elem_info_t *obj) |
Get info whether an element is locked. | |
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. | |
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. | |
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. | |
int | snd_ctl_elem_info_is_owner (const snd_ctl_elem_info_t *obj) |
Get info if I own an element. | |
int | snd_ctl_elem_info_is_user (const snd_ctl_elem_info_t *obj) |
Get info if it's a user element. | |
pid_t | snd_ctl_elem_info_get_owner (const snd_ctl_elem_info_t *obj) |
Get owner of a locked element. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
int | snd_ctl_elem_info_get_dimensions (const snd_ctl_elem_info_t *obj) |
Get count of dimensions for given element. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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. | |
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 INTEGER CTL element. | |
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 INTEGER64 CTL element. | |
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 BOOLEAN CTL element. | |
int | snd_ctl_elem_add_iec958 (snd_ctl_t *ctl, const snd_ctl_elem_id_t *id) |
Create and add an user IEC958 CTL element. | |
int | snd_ctl_elem_remove (snd_ctl_t *ctl, snd_ctl_elem_id_t *id) |
Remove an user CTL element. | |
size_t | snd_ctl_elem_value_sizeof (void) |
get size of snd_ctl_elem_value_t | |
int | snd_ctl_elem_value_malloc (snd_ctl_elem_value_t **ptr) |
allocate an invalid snd_ctl_elem_value_t using standard malloc | |
void | snd_ctl_elem_value_free (snd_ctl_elem_value_t *obj) |
frees a previously allocated snd_ctl_elem_value_t | |
void | snd_ctl_elem_value_clear (snd_ctl_elem_value_t *obj) |
clear given snd_ctl_elem_value_t object | |
void | snd_ctl_elem_value_copy (snd_ctl_elem_value_t *dst, const snd_ctl_elem_value_t *src) |
copy one snd_ctl_elem_value_t to another | |
void | snd_ctl_elem_value_get_id (const snd_ctl_elem_value_t *obj, snd_ctl_elem_id_t *ptr) |
Get CTL element identifier of a CTL element id/value. | |
unsigned int | snd_ctl_elem_value_get_numid (const snd_ctl_elem_value_t *obj) |
Get element numeric identifier of a CTL element id/value. | |
snd_ctl_elem_iface_t | snd_ctl_elem_value_get_interface (const snd_ctl_elem_value_t *obj) |
Get interface part of CTL element identifier of a CTL element id/value. | |
unsigned int | snd_ctl_elem_value_get_device (const snd_ctl_elem_value_t *obj) |
Get device part of CTL element identifier of a CTL element id/value. | |
unsigned int | snd_ctl_elem_value_get_subdevice (const snd_ctl_elem_value_t *obj) |
Get subdevice part of CTL element identifier of a CTL element id/value. | |
const char * | snd_ctl_elem_value_get_name (const snd_ctl_elem_value_t *obj) |
Get name part of CTL element identifier of a CTL element id/value. | |
unsigned int | snd_ctl_elem_value_get_index (const snd_ctl_elem_value_t *obj) |
Get index part of CTL element identifier of a CTL element id/value. | |
void | snd_ctl_elem_value_set_id (snd_ctl_elem_value_t *obj, const snd_ctl_elem_id_t *ptr) |
Set CTL element identifier of a CTL element id/value. | |
void | snd_ctl_elem_value_set_numid (snd_ctl_elem_value_t *obj, unsigned int val) |
Set element numeric identifier of a CTL element id/value. | |
void | snd_ctl_elem_value_set_interface (snd_ctl_elem_value_t *obj, snd_ctl_elem_iface_t val) |
Set interface part of CTL element identifier of a CTL element id/value. | |
void | snd_ctl_elem_value_set_device (snd_ctl_elem_value_t *obj, unsigned int val) |
Set device part of CTL element identifier of a CTL element id/value. | |
void | snd_ctl_elem_value_set_subdevice (snd_ctl_elem_value_t *obj, unsigned int val) |
Set subdevice part of CTL element identifier of a CTL element id/value. | |
void | snd_ctl_elem_value_set_name (snd_ctl_elem_value_t *obj, const char *val) |
Set name part of CTL element identifier of a CTL element id/value. | |
void | snd_ctl_elem_value_set_index (snd_ctl_elem_value_t *obj, unsigned int val) |
Set index part of CTL element identifier of a CTL element id/value. | |
int | snd_ctl_elem_value_get_boolean (const snd_ctl_elem_value_t *obj, unsigned int idx) |
Get value for an entry of a SND_CTL_ELEM_TYPE_BOOLEAN CTL element id/value. | |
long | snd_ctl_elem_value_get_integer (const snd_ctl_elem_value_t *obj, unsigned int idx) |
Get value for an entry of a SND_CTL_ELEM_TYPE_INTEGER CTL element id/value. | |
long long | snd_ctl_elem_value_get_integer64 (const snd_ctl_elem_value_t *obj, unsigned int idx) |
Get value for an entry of a SND_CTL_ELEM_TYPE_INTEGER64 CTL element id/value. | |
unsigned int | snd_ctl_elem_value_get_enumerated (const snd_ctl_elem_value_t *obj, unsigned int idx) |
Get value for an entry of a SND_CTL_ELEM_TYPE_ENUMERATED CTL element id/value. | |
unsigned char | snd_ctl_elem_value_get_byte (const snd_ctl_elem_value_t *obj, unsigned int idx) |
Get value for an entry of a SND_CTL_ELEM_TYPE_BYTES CTL element id/value. | |
void | snd_ctl_elem_value_set_boolean (snd_ctl_elem_value_t *obj, unsigned int idx, long val) |
Set value for an entry of a SND_CTL_ELEM_TYPE_BOOLEAN CTL element id/value. | |
void | snd_ctl_elem_value_set_integer (snd_ctl_elem_value_t *obj, unsigned int idx, long val) |
Set value for an entry of a SND_CTL_ELEM_TYPE_INTEGER CTL element id/value. | |
void | snd_ctl_elem_value_set_integer64 (snd_ctl_elem_value_t *obj, unsigned int idx, long long val) |
Set value for an entry of a SND_CTL_ELEM_TYPE_INTEGER64 CTL element id/value. | |
void | snd_ctl_elem_value_set_enumerated (snd_ctl_elem_value_t *obj, unsigned int idx, unsigned int val) |
Set value for an entry of a SND_CTL_ELEM_TYPE_ENUMERATED CTL element id/value. | |
void | snd_ctl_elem_value_set_byte (snd_ctl_elem_value_t *obj, unsigned int idx, unsigned char val) |
Set value for an entry of a SND_CTL_ELEM_TYPE_BYTES CTL element id/value. | |
void | snd_ctl_elem_set_bytes (snd_ctl_elem_value_t *obj, void *data, size_t size) |
Set CTL element SND_CTL_ELEM_TYPE_BYTES value. | |
const void * | snd_ctl_elem_value_get_bytes (const snd_ctl_elem_value_t *obj) |
Get value for a SND_CTL_ELEM_TYPE_BYTES CTL element id/value. | |
void | snd_ctl_elem_value_get_iec958 (const snd_ctl_elem_value_t *obj, snd_aes_iec958_t *ptr) |
Get value for a SND_CTL_ELEM_TYPE_IEC958 CTL element id/value. | |
void | snd_ctl_elem_value_set_iec958 (snd_ctl_elem_value_t *obj, const snd_aes_iec958_t *ptr) |
Set value for a SND_CTL_ELEM_TYPE_IEC958 CTL element id/value. |
#define SND_CONTROL_DLSYM_VERSION _dlsym_control_001 |
dlsym version for interface entry callback
#define SND_CTL_ASYNC |
Async notification (flag for open mode)
#define snd_ctl_card_info_alloca | ( | ptr | ) |
#define snd_ctl_elem_id_alloca | ( | ptr | ) |
#define snd_ctl_elem_info_alloca | ( | ptr | ) |
#define snd_ctl_elem_list_alloca | ( | ptr | ) |
#define snd_ctl_elem_value_alloca | ( | ptr | ) |
#define snd_ctl_event_alloca | ( | ptr | ) |
#define SND_CTL_EVENT_MASK_ADD |
Element has been added
#define SND_CTL_EVENT_MASK_INFO |
Element info has been changed
#define SND_CTL_EVENT_MASK_REMOVE |
Element has been removed (Warning: test this first and if set don't test the other masks)
#define SND_CTL_EVENT_MASK_TLV |
Element's TLV value has been changed
#define SND_CTL_EVENT_MASK_VALUE |
Element value has been changed
#define SND_CTL_NAME_CAPTURE "Capture " |
CTL name helper
#define SND_CTL_NAME_IEC958 | ( | expl, | |||
direction, | |||||
what | ) | "IEC958 " expl SND_CTL_NAME_##direction SND_CTL_NAME_IEC958_##what |
Element name for IEC958 (S/PDIF)
#define SND_CTL_NAME_IEC958_CON_MASK "Con Mask" |
CTL name helper
#define SND_CTL_NAME_IEC958_DEFAULT "Default" |
CTL name helper
#define SND_CTL_NAME_IEC958_MASK "Mask" |
CTL name helper
#define SND_CTL_NAME_IEC958_NONE "" |
CTL name helper
#define SND_CTL_NAME_IEC958_PCM_STREAM "PCM Stream" |
CTL name helper
#define SND_CTL_NAME_IEC958_PRO_MASK "Pro Mask" |
CTL name helper
#define SND_CTL_NAME_IEC958_SWITCH "Switch" |
CTL name helper
#define SND_CTL_NAME_IEC958_VOLUME "Volume" |
CTL name helper
#define SND_CTL_NAME_NONE "" |
CTL name helper
#define SND_CTL_NAME_PLAYBACK "Playback " |
CTL name helper
#define SND_CTL_NONBLOCK |
Non blocking mode (flag for open mode)
#define SND_CTL_POWER_D0 0x0000 |
ACPI/PCI Power State D0
#define SND_CTL_POWER_D1 0x0100 |
ACPI/PCI Power State D1
#define SND_CTL_POWER_D2 0x0200 |
ACPI/PCI Power State D2
#define SND_CTL_POWER_D3 0x0300 |
ACPI/PCI Power State D3
#define SND_CTL_POWER_D3cold (SND_CTL_POWER_D3|0x0001) |
ACPI/PCI Power State D3cold
#define SND_CTL_POWER_D3hot (SND_CTL_POWER_D3|0x0000) |
ACPI/PCI Power State D3hot
#define SND_CTL_POWER_MASK 0xff00 |
Mask for the major Power State identifier
#define SND_CTL_READONLY |
Read only (flag for open mode)
#define SND_CTL_TLV_DB_GAIN_MUTE -9999999 |
Mute state
#define SND_CTL_TLVT_CONTAINER 0x0000 |
TLV type - Container
#define SND_CTL_TLVT_DB_LINEAR 0x0002 |
TLV type - linear volume
#define SND_CTL_TLVT_DB_RANGE 0x0003 |
TLV type - dB range container
#define SND_CTL_TLVT_DB_SCALE 0x0001 |
TLV type - basic dB scale
#define SND_SCTL_NOFREE 0x0001 |
Don't destroy the ctl handle when close
typedef struct snd_aes_iec958 snd_aes_iec958_t |
IEC958 structure
typedef struct _snd_ctl_card_info snd_ctl_card_info_t |
CTL card info container
typedef struct _snd_ctl_elem_id snd_ctl_elem_id_t |
CTL element identifier container
typedef enum _snd_ctl_elem_iface snd_ctl_elem_iface_t |
CTL related interface
typedef struct _snd_ctl_elem_info snd_ctl_elem_info_t |
CTL element info container
typedef struct _snd_ctl_elem_list snd_ctl_elem_list_t |
CTL element identifier list container
typedef enum _snd_ctl_elem_type snd_ctl_elem_type_t |
CTL element type
typedef struct _snd_ctl_elem_value snd_ctl_elem_value_t |
CTL element value container
typedef struct _snd_ctl_event snd_ctl_event_t |
CTL event container
typedef enum _snd_ctl_event_type snd_ctl_event_type_t |
Event class
typedef struct _snd_ctl snd_ctl_t |
CTL handle
typedef enum _snd_ctl_type snd_ctl_type_t |
CTL type
typedef struct _snd_sctl snd_sctl_t |
SCTL type
enum _snd_ctl_elem_iface |
enum _snd_ctl_elem_type |
CTL element type
enum _snd_ctl_event_type |
enum _snd_ctl_type |
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.
handler | Returned handler handle | |
ctl | CTL handle | |
callback | Callback function | |
private_data | Callback private data |
snd_ctl_t* snd_async_handler_get_ctl | ( | snd_async_handler_t * | handler | ) |
Return CTL handle related to an async handler.
handler | Async handler handle |
int snd_card_get_index | ( | const char * | string | ) |
Convert card string to an integer value.
string | String containing card identifier |
int snd_card_get_longname | ( | int | card, | |
char ** | name | |||
) |
Obtain the card long name.
card | Card number | |
name | Result - card long name corresponding to card number |
int snd_card_get_name | ( | int | card, | |
char ** | name | |||
) |
Obtain the card name.
card | Card number | |
name | Result - card name corresponding to card number |
int snd_card_load | ( | int | card | ) |
Try to load the driver for a card.
card | Card number. |
int snd_card_next | ( | int * | rcard | ) |
Try to determine the next card.
rcard | pointer to card number |
int snd_ctl_card_info | ( | snd_ctl_t * | ctl, | |
snd_ctl_card_info_t * | info | |||
) |
Get card related information.
ctl | CTL handle | |
info | Card info pointer |
void snd_ctl_card_info_clear | ( | snd_ctl_card_info_t * | obj | ) |
void snd_ctl_card_info_copy | ( | snd_ctl_card_info_t * | dst, | |
const snd_ctl_card_info_t * | src | |||
) |
copy one snd_ctl_card_info_t to another
dst | pointer to destination | |
src | pointer to source |
void snd_ctl_card_info_free | ( | snd_ctl_card_info_t * | obj | ) |
int snd_ctl_card_info_get_card | ( | const snd_ctl_card_info_t * | obj | ) |
Get card number from a CTL card info.
obj | CTL card info |
const char* snd_ctl_card_info_get_components | ( | const snd_ctl_card_info_t * | obj | ) |
Get card component list from a CTL card info.
obj | CTL card info |
const char* snd_ctl_card_info_get_driver | ( | const snd_ctl_card_info_t * | obj | ) |
Get card driver name from a CTL card info.
obj | CTL card info |
const char* snd_ctl_card_info_get_id | ( | const snd_ctl_card_info_t * | obj | ) |
Get card identifier from a CTL card info.
obj | CTL card info |
const char* snd_ctl_card_info_get_longname | ( | const snd_ctl_card_info_t * | obj | ) |
Get card long name from a CTL card info.
obj | CTL card info |
const char* snd_ctl_card_info_get_mixername | ( | const snd_ctl_card_info_t * | obj | ) |
Get card mixer name from a CTL card info.
obj | CTL card info |
const char* snd_ctl_card_info_get_name | ( | const snd_ctl_card_info_t * | obj | ) |
Get card name from a CTL card info.
obj | CTL card info |
int snd_ctl_card_info_malloc | ( | snd_ctl_card_info_t ** | ptr | ) |
allocate an invalid snd_ctl_card_info_t using standard malloc
ptr | returned pointer |
size_t snd_ctl_card_info_sizeof | ( | void | ) |
int snd_ctl_close | ( | snd_ctl_t * | ctl | ) |
close CTL handle
ctl | CTL handle |
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 BOOLEAN CTL element.
ctl | CTL handle | |
id | CTL element id to add | |
count | number of elements |
int snd_ctl_elem_add_iec958 | ( | snd_ctl_t * | ctl, | |
const snd_ctl_elem_id_t * | id | |||
) |
Create and add an user IEC958 CTL element.
ctl | CTL handle | |
id | CTL element info to add |
int snd_ctl_elem_add_integer | ( | snd_ctl_t * | ctl, | |
const snd_ctl_elem_id_t * | id, | |||
unsigned int | count, | |||
long | min, | |||
long | max, | |||
long | step | |||
) |
Create and add an user INTEGER CTL element.
ctl | CTL handle | |
id | CTL element id to add | |
count | number of elements | |
min | minimum value | |
max | maximum value | |
step | value step |
int snd_ctl_elem_add_integer64 | ( | snd_ctl_t * | ctl, | |
const snd_ctl_elem_id_t * | id, | |||
unsigned int | count, | |||
long long | min, | |||
long long | max, | |||
long long | step | |||
) |
Create and add an user INTEGER64 CTL element.
ctl | CTL handle | |
id | CTL element id to add | |
count | number of elements | |
min | minimum value | |
max | maximum value | |
step | value step |
void snd_ctl_elem_id_clear | ( | snd_ctl_elem_id_t * | obj | ) |
void snd_ctl_elem_id_copy | ( | snd_ctl_elem_id_t * | dst, | |
const snd_ctl_elem_id_t * | src | |||
) |
void snd_ctl_elem_id_free | ( | snd_ctl_elem_id_t * | obj | ) |
unsigned int snd_ctl_elem_id_get_device | ( | const snd_ctl_elem_id_t * | obj | ) |
Get device part of a CTL element identifier.
obj | CTL element identifier |
unsigned int snd_ctl_elem_id_get_index | ( | const snd_ctl_elem_id_t * | obj | ) |
Get index part of a CTL element identifier.
obj | CTL element identifier |
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.
obj | CTL element identifier |
const char* snd_ctl_elem_id_get_name | ( | const snd_ctl_elem_id_t * | obj | ) |
Get name part of a CTL element identifier.
obj | CTL element identifier |
unsigned int snd_ctl_elem_id_get_numid | ( | const snd_ctl_elem_id_t * | obj | ) |
Get numeric identifier from a CTL element identifier.
obj | CTL element identifier |
unsigned int snd_ctl_elem_id_get_subdevice | ( | const snd_ctl_elem_id_t * | obj | ) |
Get subdevice part of a CTL element identifier.
obj | CTL element identifier |
int snd_ctl_elem_id_malloc | ( | snd_ctl_elem_id_t ** | ptr | ) |
allocate an invalid snd_ctl_elem_id_t using standard malloc
ptr | returned pointer |
void snd_ctl_elem_id_set_device | ( | snd_ctl_elem_id_t * | obj, | |
unsigned int | val | |||
) |
Set device part for a CTL element identifier.
obj | CTL element identifier | |
val | CTL element related device |
void snd_ctl_elem_id_set_index | ( | snd_ctl_elem_id_t * | obj, | |
unsigned int | val | |||
) |
Set index part for a CTL element identifier.
obj | CTL element identifier | |
val | CTL element index |
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.
obj | CTL element identifier | |
val | CTL element related interface |
void snd_ctl_elem_id_set_name | ( | snd_ctl_elem_id_t * | obj, | |
const char * | val | |||
) |
Set name part for a CTL element identifier.
obj | CTL element identifier | |
val | CTL element name |
void snd_ctl_elem_id_set_numid | ( | snd_ctl_elem_id_t * | obj, | |
unsigned int | val | |||
) |
Set numeric identifier for a CTL element identifier.
obj | CTL element identifier | |
val | CTL element numeric identifier |
void snd_ctl_elem_id_set_subdevice | ( | snd_ctl_elem_id_t * | obj, | |
unsigned int | val | |||
) |
Set subdevice part for a CTL element identifier.
obj | CTL element identifier | |
val | CTL element related subdevice |
size_t snd_ctl_elem_id_sizeof | ( | void | ) |
const char* snd_ctl_elem_iface_name | ( | snd_ctl_elem_iface_t | iface | ) |
get name of a CTL element related interface
iface | CTL element related interface |
int snd_ctl_elem_info | ( | snd_ctl_t * | ctl, | |
snd_ctl_elem_info_t * | info | |||
) |
Get CTL element information.
ctl | CTL handle | |
info | CTL element id/information pointer |
void snd_ctl_elem_info_clear | ( | snd_ctl_elem_info_t * | obj | ) |
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
dst | pointer to destination | |
src | pointer to source |
void snd_ctl_elem_info_free | ( | snd_ctl_elem_info_t * | obj | ) |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info | |
idx | The dimension index |
int snd_ctl_elem_info_get_dimensions | ( | const snd_ctl_elem_info_t * | obj | ) |
Get count of dimensions for given element.
obj | CTL element id/info |
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.
obj | CTL element id/info | |
ptr | Pointer to returned CTL element identifier |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
pid_t snd_ctl_elem_info_get_owner | ( | const snd_ctl_elem_info_t * | obj | ) |
Get owner of a locked element.
obj | CTL element id/info |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
int snd_ctl_elem_info_is_inactive | ( | const snd_ctl_elem_info_t * | obj | ) |
Get info about status from a CTL element id/info.
obj | CTL element id/info |
int snd_ctl_elem_info_is_locked | ( | const snd_ctl_elem_info_t * | obj | ) |
Get info whether an element is locked.
obj | CTL element id/info |
int snd_ctl_elem_info_is_owner | ( | const snd_ctl_elem_info_t * | obj | ) |
Get info if I own an element.
obj | CTL element id/info |
int snd_ctl_elem_info_is_readable | ( | const snd_ctl_elem_info_t * | obj | ) |
Get info about readability from a CTL element id/info.
obj | CTL element id/info |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
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.
obj | CTL element id/info |
int snd_ctl_elem_info_is_user | ( | const snd_ctl_elem_info_t * | obj | ) |
Get info if it's a user element.
obj | CTL element id/info |
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.
obj | CTL element id/info |
int snd_ctl_elem_info_is_writable | ( | const snd_ctl_elem_info_t * | obj | ) |
Get info about writability from a CTL element id/info.
obj | CTL element id/info |
int snd_ctl_elem_info_malloc | ( | snd_ctl_elem_info_t ** | ptr | ) |
allocate an invalid snd_ctl_elem_info_t using standard malloc
ptr | returned pointer |
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.
obj | CTL element id/info | |
val | device part of element identifier |
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.
obj | CTL element id/info | |
ptr | CTL element identifier |
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.
obj | CTL element id/info | |
val | index part of element identifier |
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.
obj | CTL element id/info | |
val | interface part of element identifier |
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.
obj | CTL element id/info | |
val | item number |
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.
obj | CTL element id/info | |
val | name part of element identifier |
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.
obj | CTL element id/info | |
val | element numeric identifier |
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.
obj | CTL element id/info | |
val | subdevice part of element identifier |
size_t snd_ctl_elem_info_sizeof | ( | void | ) |
int snd_ctl_elem_list | ( | snd_ctl_t * | ctl, | |
snd_ctl_elem_list_t * | list | |||
) |
Get a list of element identifiers.
ctl | CTL handle | |
list | CTL element identifiers list pointer |
int snd_ctl_elem_list_alloc_space | ( | snd_ctl_elem_list_t * | obj, | |
unsigned int | entries | |||
) |
allocate space for CTL element identifiers list
obj | CTL element identifiers list | |
entries | Entries to allocate |
void snd_ctl_elem_list_clear | ( | snd_ctl_elem_list_t * | obj | ) |
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
dst | pointer to destination | |
src | pointer to source |
void snd_ctl_elem_list_free | ( | snd_ctl_elem_list_t * | obj | ) |
void snd_ctl_elem_list_free_space | ( | snd_ctl_elem_list_t * | obj | ) |
free previously allocated space for CTL element identifiers list
obj | CTL element identifiers list |
unsigned int snd_ctl_elem_list_get_count | ( | const snd_ctl_elem_list_t * | obj | ) |
Get total count of elements present in CTL device (information present in every filled CTL element identifiers list).
obj | CTL element identifier list |
unsigned int snd_ctl_elem_list_get_device | ( | const snd_ctl_elem_list_t * | obj, | |
unsigned int | idx | |||
) |
Get device part of CTL element identifier for an entry of a CTL element identifiers list.
obj | CTL element identifier list | |
idx | Index of entry |
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.
obj | CTL element identifier list | |
idx | Index of entry | |
ptr | Pointer to returned CTL element identifier |
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.
obj | CTL element identifier list | |
idx | Index of entry |
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.
obj | CTL element identifier list | |
idx | Index of entry |
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.
obj | CTL element identifier list | |
idx | Index of entry |
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.
obj | CTL element identifier list | |
idx | Index of entry |
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.
obj | CTL element identifier list | |
idx | Index of entry |
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.
obj | CTL element identifier list |
int snd_ctl_elem_list_malloc | ( | snd_ctl_elem_list_t ** | ptr | ) |
allocate an invalid snd_ctl_elem_list_t using standard malloc
ptr | returned pointer |
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.
obj | CTL element identifiers list | |
val | index of CTL element to put at position 0 of list |
size_t snd_ctl_elem_list_sizeof | ( | void | ) |
int snd_ctl_elem_lock | ( | snd_ctl_t * | ctl, | |
snd_ctl_elem_id_t * | id | |||
) |
Lock CTL element.
ctl | CTL handle | |
id | CTL element id pointer |
int snd_ctl_elem_read | ( | snd_ctl_t * | ctl, | |
snd_ctl_elem_value_t * | control | |||
) |
Get CTL element value.
ctl | CTL handle | |
control | CTL element id/value pointer |
int snd_ctl_elem_remove | ( | snd_ctl_t * | ctl, | |
snd_ctl_elem_id_t * | id | |||
) |
Remove an user CTL element.
ctl | CTL handle | |
id | CTL element identification |
void snd_ctl_elem_set_bytes | ( | snd_ctl_elem_value_t * | obj, | |
void * | data, | |||
size_t | size | |||
) |
Set CTL element SND_CTL_ELEM_TYPE_BYTES value.
obj | CTL handle | |
data | Bytes value | |
size | Size in bytes |
int snd_ctl_elem_tlv_command | ( | snd_ctl_t * | ctl, | |
const snd_ctl_elem_id_t * | id, | |||
const unsigned int * | tlv | |||
) |
Process CTL element TLV command.
ctl | CTL handle | |
id | CTL element id pointer | |
tlv | TLV array pointer to process |
0 | on success | |
>0 | on success when value was changed | |
<0 | a negative error code |
int snd_ctl_elem_tlv_read | ( | snd_ctl_t * | ctl, | |
const snd_ctl_elem_id_t * | id, | |||
unsigned int * | tlv, | |||
unsigned int | tlv_size | |||
) |
Get CTL element TLV value.
ctl | CTL handle | |
id | CTL element id pointer | |
tlv | TLV array pointer to store | |
tlv_size | TLV array size in bytes |
int snd_ctl_elem_tlv_write | ( | snd_ctl_t * | ctl, | |
const snd_ctl_elem_id_t * | id, | |||
const unsigned int * | tlv | |||
) |
Set CTL element TLV value.
ctl | CTL handle | |
id | CTL element id pointer | |
tlv | TLV array pointer to store |
0 | on success | |
>0 | on success when value was changed | |
<0 | a negative error code |
const char* snd_ctl_elem_type_name | ( | snd_ctl_elem_type_t | type | ) |
get name of a CTL element type
type | CTL element type |
int snd_ctl_elem_unlock | ( | snd_ctl_t * | ctl, | |
snd_ctl_elem_id_t * | id | |||
) |
Unlock CTL element.
ctl | CTL handle | |
id | CTL element id pointer |
void snd_ctl_elem_value_clear | ( | snd_ctl_elem_value_t * | obj | ) |
void snd_ctl_elem_value_copy | ( | snd_ctl_elem_value_t * | dst, | |
const snd_ctl_elem_value_t * | src | |||
) |
copy one snd_ctl_elem_value_t to another
dst | pointer to destination | |
src | pointer to source |
void snd_ctl_elem_value_free | ( | snd_ctl_elem_value_t * | obj | ) |
int snd_ctl_elem_value_get_boolean | ( | const snd_ctl_elem_value_t * | obj, | |
unsigned int | idx | |||
) |
Get value for an entry of a SND_CTL_ELEM_TYPE_BOOLEAN CTL element id/value.
obj | CTL element id/value | |
idx | Entry index |
unsigned char snd_ctl_elem_value_get_byte | ( | const snd_ctl_elem_value_t * | obj, | |
unsigned int | idx | |||
) |
Get value for an entry of a SND_CTL_ELEM_TYPE_BYTES CTL element id/value.
obj | CTL element id/value | |
idx | Entry index |
const void* snd_ctl_elem_value_get_bytes | ( | const snd_ctl_elem_value_t * | obj | ) |
Get value for a SND_CTL_ELEM_TYPE_BYTES CTL element id/value.
obj | CTL element id/value |
unsigned int snd_ctl_elem_value_get_device | ( | const snd_ctl_elem_value_t * | obj | ) |
Get device part of CTL element identifier of a CTL element id/value.
obj | CTL element id/value |
unsigned int snd_ctl_elem_value_get_enumerated | ( | const snd_ctl_elem_value_t * | obj, | |
unsigned int | idx | |||
) |
Get value for an entry of a SND_CTL_ELEM_TYPE_ENUMERATED CTL element id/value.
obj | CTL element id/value | |
idx | Entry index |
void snd_ctl_elem_value_get_id | ( | const snd_ctl_elem_value_t * | obj, | |
snd_ctl_elem_id_t * | ptr | |||
) |
Get CTL element identifier of a CTL element id/value.
obj | CTL element id/value | |
ptr | Pointer to returned CTL element identifier |
void snd_ctl_elem_value_get_iec958 | ( | const snd_ctl_elem_value_t * | obj, | |
snd_aes_iec958_t * | ptr | |||
) |
Get value for a SND_CTL_ELEM_TYPE_IEC958 CTL element id/value.
obj | CTL element id/value | |
ptr | Pointer to returned CTL element value |
unsigned int snd_ctl_elem_value_get_index | ( | const snd_ctl_elem_value_t * | obj | ) |
Get index part of CTL element identifier of a CTL element id/value.
obj | CTL element id/value |
long snd_ctl_elem_value_get_integer | ( | const snd_ctl_elem_value_t * | obj, | |
unsigned int | idx | |||
) |
Get value for an entry of a SND_CTL_ELEM_TYPE_INTEGER CTL element id/value.
obj | CTL element id/value | |
idx | Entry index |
long long snd_ctl_elem_value_get_integer64 | ( | const snd_ctl_elem_value_t * | obj, | |
unsigned int | idx | |||
) |
Get value for an entry of a SND_CTL_ELEM_TYPE_INTEGER64 CTL element id/value.
obj | CTL element id/value | |
idx | Entry index |
snd_ctl_elem_iface_t snd_ctl_elem_value_get_interface | ( | const snd_ctl_elem_value_t * | obj | ) |
Get interface part of CTL element identifier of a CTL element id/value.
obj | CTL element id/value |
const char* snd_ctl_elem_value_get_name | ( | const snd_ctl_elem_value_t * | obj | ) |
Get name part of CTL element identifier of a CTL element id/value.
obj | CTL element id/value |
unsigned int snd_ctl_elem_value_get_numid | ( | const snd_ctl_elem_value_t * | obj | ) |
Get element numeric identifier of a CTL element id/value.
obj | CTL element id/value |
unsigned int snd_ctl_elem_value_get_subdevice | ( | const snd_ctl_elem_value_t * | obj | ) |
Get subdevice part of CTL element identifier of a CTL element id/value.
obj | CTL element id/value |
int snd_ctl_elem_value_malloc | ( | snd_ctl_elem_value_t ** | ptr | ) |
allocate an invalid snd_ctl_elem_value_t using standard malloc
ptr | returned pointer |
void snd_ctl_elem_value_set_boolean | ( | snd_ctl_elem_value_t * | obj, | |
unsigned int | idx, | |||
long | val | |||
) |
Set value for an entry of a SND_CTL_ELEM_TYPE_BOOLEAN CTL element id/value.
obj | CTL element id/value | |
idx | Entry index | |
val | value for the entry |
void snd_ctl_elem_value_set_byte | ( | snd_ctl_elem_value_t * | obj, | |
unsigned int | idx, | |||
unsigned char | val | |||
) |
Set value for an entry of a SND_CTL_ELEM_TYPE_BYTES CTL element id/value.
obj | CTL element id/value | |
idx | Entry index | |
val | value for the entry |
void snd_ctl_elem_value_set_device | ( | snd_ctl_elem_value_t * | obj, | |
unsigned int | val | |||
) |
Set device part of CTL element identifier of a CTL element id/value.
obj | CTL element id/value | |
val | device part of element identifier |
void snd_ctl_elem_value_set_enumerated | ( | snd_ctl_elem_value_t * | obj, | |
unsigned int | idx, | |||
unsigned int | val | |||
) |
Set value for an entry of a SND_CTL_ELEM_TYPE_ENUMERATED CTL element id/value.
obj | CTL element id/value | |
idx | Entry index | |
val | value for the entry |
void snd_ctl_elem_value_set_id | ( | snd_ctl_elem_value_t * | obj, | |
const snd_ctl_elem_id_t * | ptr | |||
) |
Set CTL element identifier of a CTL element id/value.
obj | CTL element id/value | |
ptr | CTL element identifier |
void snd_ctl_elem_value_set_iec958 | ( | snd_ctl_elem_value_t * | obj, | |
const snd_aes_iec958_t * | ptr | |||
) |
Set value for a SND_CTL_ELEM_TYPE_IEC958 CTL element id/value.
obj | CTL element id/value | |
ptr | Pointer to CTL element value |
void snd_ctl_elem_value_set_index | ( | snd_ctl_elem_value_t * | obj, | |
unsigned int | val | |||
) |
Set index part of CTL element identifier of a CTL element id/value.
obj | CTL element id/value | |
val | index part of element identifier |
void snd_ctl_elem_value_set_integer | ( | snd_ctl_elem_value_t * | obj, | |
unsigned int | idx, | |||
long | val | |||
) |
Set value for an entry of a SND_CTL_ELEM_TYPE_INTEGER CTL element id/value.
obj | CTL element id/value | |
idx | Entry index | |
val | value for the entry |
void snd_ctl_elem_value_set_integer64 | ( | snd_ctl_elem_value_t * | obj, | |
unsigned int | idx, | |||
long long | val | |||
) |
Set value for an entry of a SND_CTL_ELEM_TYPE_INTEGER64 CTL element id/value.
obj | CTL element id/value | |
idx | Entry index | |
val | value for the entry |
void snd_ctl_elem_value_set_interface | ( | snd_ctl_elem_value_t * | obj, | |
snd_ctl_elem_iface_t | val | |||
) |
Set interface part of CTL element identifier of a CTL element id/value.
obj | CTL element id/value | |
val | interface part of element identifier |
void snd_ctl_elem_value_set_name | ( | snd_ctl_elem_value_t * | obj, | |
const char * | val | |||
) |
Set name part of CTL element identifier of a CTL element id/value.
obj | CTL element id/value | |
val | name part of element identifier |
void snd_ctl_elem_value_set_numid | ( | snd_ctl_elem_value_t * | obj, | |
unsigned int | val | |||
) |
Set element numeric identifier of a CTL element id/value.
obj | CTL element id/value | |
val | element numeric identifier |
void snd_ctl_elem_value_set_subdevice | ( | snd_ctl_elem_value_t * | obj, | |
unsigned int | val | |||
) |
Set subdevice part of CTL element identifier of a CTL element id/value.
obj | CTL element id/value | |
val | subdevice part of element identifier |
size_t snd_ctl_elem_value_sizeof | ( | void | ) |
int snd_ctl_elem_write | ( | snd_ctl_t * | ctl, | |
snd_ctl_elem_value_t * | control | |||
) |
Set CTL element value.
ctl | CTL handle | |
control | CTL element id/value pointer |
0 | on success | |
>0 | on success when value was changed | |
<0 | a negative error code |
void snd_ctl_event_clear | ( | snd_ctl_event_t * | obj | ) |
void snd_ctl_event_copy | ( | snd_ctl_event_t * | dst, | |
const snd_ctl_event_t * | src | |||
) |
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.
obj | CTL event |
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.
obj | CTL event | |
ptr | Pointer to returned CTL element identifier |
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.
obj | CTL event |
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.
obj | CTL event |
unsigned int snd_ctl_event_elem_get_mask | ( | const snd_ctl_event_t * | obj | ) |
Get event mask for an element related event.
obj | CTL event |
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.
obj | CTL event |
unsigned int snd_ctl_event_elem_get_numid | ( | const snd_ctl_event_t * | obj | ) |
Get element numeric identifier for an element related event.
obj | CTL event |
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.
obj | CTL event |
void snd_ctl_event_free | ( | snd_ctl_event_t * | obj | ) |
snd_ctl_event_type_t snd_ctl_event_get_type | ( | const snd_ctl_event_t * | obj | ) |
Get type of a CTL event.
obj | CTL event |
int snd_ctl_event_malloc | ( | snd_ctl_event_t ** | ptr | ) |
allocate an invalid snd_ctl_event_t using standard malloc
ptr | returned pointer |
size_t snd_ctl_event_sizeof | ( | void | ) |
const char* snd_ctl_event_type_name | ( | snd_ctl_event_type_t | type | ) |
get name of a CTL event type
type | CTL event type |
int snd_ctl_get_power_state | ( | snd_ctl_t * | ctl, | |
unsigned int * | state | |||
) |
Get actual Power State.
ctl | CTL handle | |
state | Destination value |
int snd_ctl_hwdep_info | ( | snd_ctl_t * | ctl, | |
snd_hwdep_info_t * | info | |||
) |
Get info about a hardware dependent device.
ctl | CTL handle | |
info | Hardware dependent device id/info pointer |
int snd_ctl_hwdep_next_device | ( | snd_ctl_t * | ctl, | |
int * | device | |||
) |
Get next hardware dependent device number.
ctl | CTL handle | |
device | current device on entry and next device on return |
const char* snd_ctl_name | ( | snd_ctl_t * | ctl | ) |
get identifier of CTL handle
ctl | CTL handle |
int snd_ctl_nonblock | ( | snd_ctl_t * | ctl, | |
int | nonblock | |||
) |
set nonblock mode
ctl | CTL handle | |
nonblock | 0 = block, 1 = nonblock mode |
int snd_ctl_open | ( | snd_ctl_t ** | ctlp, | |
const char * | name, | |||
int | mode | |||
) |
Opens a CTL.
ctlp | Returned CTL handle | |
name | ASCII identifier of the CTL handle | |
mode | Open mode (see SND_CTL_NONBLOCK, SND_CTL_ASYNC) |
int snd_ctl_open_lconf | ( | snd_ctl_t ** | ctlp, | |
const char * | name, | |||
int | mode, | |||
snd_config_t * | lconf | |||
) |
Opens a CTL using local configuration.
ctlp | Returned CTL handle | |
name | ASCII identifier of the CTL handle | |
mode | Open mode (see SND_CTL_NONBLOCK, SND_CTL_ASYNC) | |
lconf | Local configuration |
int snd_ctl_pcm_info | ( | snd_ctl_t * | ctl, | |
snd_pcm_info_t * | info | |||
) |
Get info about a PCM device.
ctl | CTL handle | |
info | PCM device id/info pointer |
int snd_ctl_pcm_next_device | ( | snd_ctl_t * | ctl, | |
int * | device | |||
) |
Get next PCM device number.
ctl | CTL handle | |
device | current device on entry and next device on return |
int snd_ctl_pcm_prefer_subdevice | ( | snd_ctl_t * | ctl, | |
int | subdev | |||
) |
Set preferred PCM subdevice number of successive PCM open.
ctl | CTL handle | |
subdev | Preferred PCM subdevice number |
int snd_ctl_poll_descriptors | ( | snd_ctl_t * | ctl, | |
struct pollfd * | pfds, | |||
unsigned int | space | |||
) |
get poll descriptors
ctl | CTL handle | |
pfds | array of poll descriptors | |
space | space in the poll descriptor array |
int snd_ctl_poll_descriptors_count | ( | snd_ctl_t * | ctl | ) |
get count of poll descriptors for CTL handle
ctl | CTL handle |
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
ctl | CTL handle | |
pfds | array of poll descriptors | |
nfds | count of poll descriptors | |
revents | returned events |
int snd_ctl_rawmidi_info | ( | snd_ctl_t * | ctl, | |
snd_rawmidi_info_t * | info | |||
) |
Get info about a RawMidi device.
ctl | CTL handle | |
info | RawMidi device id/info pointer |
int snd_ctl_rawmidi_next_device | ( | snd_ctl_t * | ctl, | |
int * | device | |||
) |
Get next RawMidi device number.
ctl | CTL handle | |
device | current device on entry and next device on return |
int snd_ctl_rawmidi_prefer_subdevice | ( | snd_ctl_t * | ctl, | |
int | subdev | |||
) |
Set preferred RawMidi subdevice number of successive RawMidi open.
ctl | CTL handle | |
subdev | Preferred RawMidi subdevice number |
int snd_ctl_read | ( | snd_ctl_t * | ctl, | |
snd_ctl_event_t * | event | |||
) |
Read an event.
ctl | CTL handle | |
event | Event pointer |
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.
ctl | CTL handle | |
state | Desired Power State |
int snd_ctl_subscribe_events | ( | snd_ctl_t * | ctl, | |
int | subscribe | |||
) |
Ask to be informed about events (poll, snd_ctl_async, snd_ctl_read).
ctl | CTL handle | |
subscribe | 0 = unsubscribe, 1 = subscribe |
snd_ctl_type_t snd_ctl_type | ( | snd_ctl_t * | ctl | ) |
get type of CTL handle
ctl | CTL handle |
int snd_ctl_wait | ( | snd_ctl_t * | ctl, | |
int | timeout | |||
) |
Wait for a CTL to become ready (i.e. at least one event pending).
ctl | CTL handle | |
timeout | maximum time in milliseconds to wait |