mixer Struct Reference

Operations provided by each mixer plugin. More...

#include <mix.h>

Data Fields
const char *const	name
	Used to identify the mixer. More...
int(*	open )(const char *dev, struct mixer_handle **handle)
	Return a handle that can be passed to other methods. More...
char *(*	get_channels )(struct mixer_handle *handle)
	Returns a string of all valid mixer channels. More...
int(*	set_channel )(struct mixer_handle *handle, const char *mixer_channel)
	Select the channel for subsequent get/set operations. More...
int(*	get )(struct mixer_handle *handle)
	Return the (normalized) current value of the selected channel. More...
int(*	set )(struct mixer_handle *handle, int val)
	Change the value of the selected channel. More...
void(*	close )(struct mixer_handle **handle)
	Free all resources associated with the given handle. More...

Detailed Description

Operations provided by each mixer plugin.

Each mixer plugin must define a non-static instance of this structure, with all pointers initialized to non-NULL values. No other symbols need to be exported.

Field Documentation

name

const char* const name

Used to identify the mixer.

open

int(* open) (const char *dev, struct mixer_handle **handle)

Return a handle that can be passed to other methods.

get_channels

char*(* get_channels) (struct mixer_handle *handle)

Returns a string of all valid mixer channels.

set_channel

int(* set_channel) (struct mixer_handle *handle, const char *mixer_channel)

Select the channel for subsequent get/set operations.

get

int(* get) (struct mixer_handle *handle)

Return the (normalized) current value of the selected channel.

set

int(* set) (struct mixer_handle *handle, int val)

Change the value of the selected channel.

close

void(* close) (struct mixer_handle **handle)

Free all resources associated with the given handle.

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

• mix.h