#include <control_external.h>

Data Fields
unsigned int	version

int	card_idx

char	id [16]

char	driver [16]

char	name [32]

char	longname [80]

char	mixername [80]

int	poll_fd

const snd_ctl_ext_callback_t *	callback

void *	private_data

snd_ctl_t *	handle

int	nonblock

int	subscribed

union {

snd_ctl_ext_tlv_rw_t * c

const unsigned int * p

}	tlv

Detailed Description

Handle of control ext

External control plugin handle

Field Documentation

◆ callback

const snd_ctl_ext_callback_t* snd_ctl_ext_t::callback

callbacks of this plugin; must be filled before calling snd_pcm_ioplug_create()

◆ card_idx

int snd_ctl_ext_t::card_idx

Index of this card; must be filled before calling snd_ctl_ext_create()

◆ driver

char snd_ctl_ext_t::driver[16]

Driver name of this card; must be filled before calling snd_ctl_ext_create()

◆ handle

snd_ctl_t* snd_ctl_ext_t::handle

control handle filled by snd_ctl_ext_create()

◆ id

char snd_ctl_ext_t::id[16]

ID string of this card; must be filled before calling snd_ctl_ext_create()

◆ longname

char snd_ctl_ext_t::longname[80]

Long name of this card; must be filled before calling snd_ctl_ext_create()

◆ mixername

char snd_ctl_ext_t::mixername[80]

Mixer name of this card; must be filled before calling snd_ctl_ext_create()

◆ name

char snd_ctl_ext_t::name[32]

short name of this card; must be filled before calling snd_ctl_ext_create()

◆ nonblock

int snd_ctl_ext_t::nonblock

non-block mode; read-only

◆ poll_fd

int snd_ctl_ext_t::poll_fd

poll descriptor

◆ private_data

void* snd_ctl_ext_t::private_data

private data, which can be used freely in the driver callbacks

◆ subscribed

int snd_ctl_ext_t::subscribed

events subscribed; read-only

◆ [union]

union { ... } snd_ctl_ext_t::tlv

optional TLV data for the control (since protocol 1.0.1)

◆ version

unsigned int snd_ctl_ext_t::version

protocol version; SND_CTL_EXT_VERSION must be filled here before calling snd_ctl_ext_create()

The documentation for this struct was generated from the following file:

/packaging/alsa-lib/include/control_external.h

Data Fields