aloop.c File Reference

#include <linux/init.h>
#include <linux/jiffies.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/info.h>
#include <sound/initval.h>

Go to the source code of this file.

Data Structures
struct	loopback_cable
struct	loopback_setup
struct	loopback
struct	loopback_pcm

Macros
#define	MAX_PCM_SUBSTREAMS   8
#define	NO_PITCH   100000
#define	CABLE_VALID_PLAYBACK   (1 << SNDRV_PCM_STREAM_PLAYBACK)
#define	CABLE_VALID_CAPTURE   (1 << SNDRV_PCM_STREAM_CAPTURE)
#define	CABLE_VALID_BOTH   (CABLE_VALID_PLAYBACK|CABLE_VALID_CAPTURE)
#define	ACTIVE_IDX   2
#define	FORMAT_IDX   3
#define	RATE_IDX   4
#define	CHANNELS_IDX   5
#define	loopback_proc_new(loopback, cidx)   do { } while (0)
#define	LOOPBACK_PM_OPS   NULL
#define	SND_LOOPBACK_DRIVER   "snd_aloop"

Functions
	MODULE_AUTHOR ("Jaroslav Kysela <[email protected]>")
	MODULE_DESCRIPTION ("A loopback soundcard")
	MODULE_LICENSE ("GPL")
	MODULE_SUPPORTED_DEVICE ("{{ALSA,Loopback soundcard}}")
	module_param_array (index, int, NULL, 0444)
	MODULE_PARM_DESC (index,"Index value for loopback soundcard.")
	module_param_array (id, charp, NULL, 0444)
	MODULE_PARM_DESC (id,"ID string for loopback soundcard.")
	module_param_array (enable, bool, NULL, 0444)
	MODULE_PARM_DESC (enable,"Enable this loopback soundcard.")
	module_param_array (pcm_substreams, int, NULL, 0444)
	MODULE_PARM_DESC (pcm_substreams,"PCM substreams # (1-8) for loopback driver.")
	module_param_array (pcm_notify, int, NULL, 0444)
	MODULE_PARM_DESC (pcm_notify,"Break capture when PCM format/rate/channels changes.")

Macro Definition Documentation

#define ACTIVE_IDX   2

#define CABLE_VALID_BOTH   (CABLE_VALID_PLAYBACK|CABLE_VALID_CAPTURE)

Definition at line 200 of file aloop.c.

#define CABLE_VALID_CAPTURE   (1 << SNDRV_PCM_STREAM_CAPTURE)

Definition at line 199 of file aloop.c.

#define CABLE_VALID_PLAYBACK   (1 << SNDRV_PCM_STREAM_PLAYBACK)

Definition at line 198 of file aloop.c.

#define CHANNELS_IDX   5

#define FORMAT_IDX   3

#define LOOPBACK_PM_OPS   NULL

Definition at line 1209 of file aloop.c.

#define loopback_proc_new	(		loopback,
			cidx
	)		do { } while (0)

Definition at line 1129 of file aloop.c.

#define MAX_PCM_SUBSTREAMS   8

Definition at line 50 of file aloop.c.

#define NO_PITCH   100000

Definition at line 69 of file aloop.c.

#define RATE_IDX   4

#define SND_LOOPBACK_DRIVER   "snd_aloop"

Definition at line 1212 of file aloop.c.

Function Documentation

MODULE_AUTHOR

(

"Jaroslav Kysela <[email protected]>"

)

MODULE_DESCRIPTION

(

"A loopback soundcard"

)

MODULE_LICENSE

(

"GPL"

)

module_param_array	(	index	,
		int	,
		NULL	,
		0444
	)

module_param_array	(	id	,
		charp	,
		NULL	,
		0444
	)

module_param_array	(	enable	,
		bool	,
		NULL	,
		0444
	)

module_param_array	(	pcm_substreams	,
		int	,
		NULL	,
		0444
	)

module_param_array	(	pcm_notify	,
		int	,
		NULL	,
		0444
	)

MODULE_PARM_DESC	(	index	,
		"Index value for loopback soundcard."
	)

MODULE_PARM_DESC	(	id	,
		"ID string for loopback soundcard."
	)

MODULE_PARM_DESC	(	enable	,
		"Enable this loopback soundcard."
	)

MODULE_PARM_DESC	(	pcm_substreams	,
		"PCM substreams # (1-8) for loopback driver."
	)

MODULE_PARM_DESC	(	pcm_notify	,
		"Break capture when PCM format/rate/channels changes."
	)

MODULE_SUPPORTED_DEVICE

(

"{{ALSA,Loopback soundcard}}"

)