snd_ctl_ext Struct Reference
[External Control Plugin SDK]

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

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Detailed Description

Handle of control ext

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Field Documentation

unsigned int snd_ctl_ext::version

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

int snd_ctl_ext::card_idx

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

char snd_ctl_ext::id[16]

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

char snd_ctl_ext::driver[16]

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

char snd_ctl_ext::name[32]

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

char snd_ctl_ext::longname[80]

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

char snd_ctl_ext::mixername[80]

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

int snd_ctl_ext::poll_fd

poll descriptor

const snd_ctl_ext_callback_t* snd_ctl_ext::callback

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

void* snd_ctl_ext::private_data

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

snd_ctl_t* snd_ctl_ext::handle

control handle filled by snd_ctl_ext_create()

int snd_ctl_ext::nonblock

non-block mode; read-only

int snd_ctl_ext::subscribed

events subscribed; read-only

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

• /tmp/buildd/alsa-lib-1.0.16/include/control_external.h