Data Structures | |
| struct | snd_aes_iec958 |
Modules | |
| High level Control Interface | |
| Setup Control Interface | |
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 struct snd_aes_iec958 | snd_aes_iec958_t |
| typedef struct _snd_ctl_card_info | snd_ctl_card_info_t |
| typedef struct _snd_ctl_elem_id | snd_ctl_elem_id_t |
| typedef struct _snd_ctl_elem_list | snd_ctl_elem_list_t |
| typedef struct _snd_ctl_elem_info | snd_ctl_elem_info_t |
| typedef struct _snd_ctl_elem_value | snd_ctl_elem_value_t |
| typedef struct _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 struct _snd_ctl | snd_ctl_t |
| typedef struct _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_device_name_hint (int card, const char *iface, void ***hints) |
| Return string list with device name hints. | |
| int | snd_device_name_free_hint (void **hints) |
| Free a string list with device name hints. | |
| char * | snd_device_name_get_hint (const void *hint, const char *id) |
| Get a hint Free a string list with device name hints. | |
| 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_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. | |
| int | snd_tlv_parse_dB_info (unsigned int *tlv, unsigned int tlv_size, unsigned int **db_tlvp) |
| Parse TLV stream and retrieve dB information. | |
| int | snd_tlv_get_dB_range (unsigned int *tlv, long rangemin, long rangemax, long *min, long *max) |
| Get the dB min/max values. | |
| 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. | |
| 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. | |
| 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. | |
| 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. | |
| 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. | |
| #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_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.
| ctl | the control handler | |
| id | the element id | |
| db_gain | the dB gain to convert (in 0.01dB unit) | |
| value | the pointer to store the converted raw volume value | |
| xdir | the direction for round-up. The value is round up when this is positive. |
| 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.
| ctl | the control handler | |
| id | the element id | |
| volume | the raw volume value to convert | |
| db_gain | the dB gain (in 0.01dB unit) |
| 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_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.
| ctl | the control handler | |
| id | the element id | |
| volume | the raw volume value to convert | |
| min | the pointer to store the minimum dB value (in 0.01dB unit) | |
| max | the pointer to store the maximum dB value (in 0.01dB unit) |
| int snd_ctl_get_power_state | ( | snd_ctl_t * | ctl, | |
| unsigned int * | state | |||
| ) |
Get actual Power State.
| ctl | CTL handle | |
| state | Destination value |
| 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_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_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 |
| int snd_device_name_free_hint | ( | void ** | hints | ) |
Free a string list with device name hints.
| hints | A string list to free |
| char* snd_device_name_get_hint | ( | const void * | hint, | |
| const char * | id | |||
| ) |
Get a hint Free a string list with device name hints.
| hint | A pointer to hint | |
| id | Hint ID (see bellow) |
| int snd_device_name_hint | ( | int | card, | |
| const char * | iface, | |||
| void *** | hints | |||
| ) |
Return string list with device name hints.
| card | Card number or -1 (means all cards) | |
| iface | Interface identification (like "pcm", "rawmidi", "timer", "seq") | |
| hints | Result - array of string with device name hints |
User defined hints are gathered from namehint.IFACE tree like:
namehint.pcm {
myfile "file:FILE=/tmp/soundwave.raw|Save sound output to /tmp/soundwave.raw"
myplug "plug:front:Do all conversions for front speakers"
}
Special variables: defaults.namehint.showall specifies if all device definitions are accepted (boolean type).
| 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.
| tlv | the TLV source returned by snd_tlv_parse_dB_info() | |
| rangemin | the minimum value of the raw volume | |
| rangemax | the maximum value of the raw volume | |
| db_gain | the dB gain to convert (in 0.01dB unit) | |
| value | the pointer to store the converted raw volume value | |
| xdir | the direction for round-up. The value is round up when this is positive. |
| 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.
| tlv | the TLV source returned by snd_tlv_parse_dB_info() | |
| rangemin | the minimum value of the raw volume | |
| rangemax | the maximum value of the raw volume | |
| volume | the raw volume value to convert | |
| db_gain | the dB gain (in 0.01dB unit) |
| int snd_tlv_get_dB_range | ( | unsigned int * | tlv, | |
| long | rangemin, | |||
| long | rangemax, | |||
| long * | min, | |||
| long * | max | |||
| ) |
Get the dB min/max values.
| tlv | the TLV source returned by snd_tlv_parse_dB_info() | |
| rangemin | the minimum value of the raw volume | |
| rangemax | the maximum value of the raw volume | |
| min | the pointer to store the minimum dB value (in 0.01dB unit) | |
| max | the pointer to store the maximum dB value (in 0.01dB unit) |
| int snd_tlv_parse_dB_info | ( | unsigned int * | tlv, | |
| unsigned int | tlv_size, | |||
| unsigned int ** | db_tlvp | |||
| ) |
Parse TLV stream and retrieve dB information.
| tlv | the TLV source | |
| tlv_size | the byte size of TLV source | |
| db_tlvp | the pointer stored the dB TLV information |
1.5.8