CONFIG_SND_ALOOP: Generic loopback driver (PCM)

General informations

The Linux kernel configuration item CONFIG_SND_ALOOP:

• prompt: Generic loopback driver (PCM)
• type: tristate
• depends on: (none)
• defined in sound/drivers/Kconfig
• found in Linux kernels: 2.6.37–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD
• modules built: snd-aloop

Help text

Say 'Y' or 'M' to include support for the PCM loopback device. This module returns played samples back to the user space using the standard ALSA PCM device. The devices are routed 0->1 and 1->0, where first number is the playback PCM device and second number is the capture device. Module creates two PCM devices and configured number of substreams (see the pcm_substreams module parameter).

The loopback device allows time synchronization with an external timing source using the time shift universal control (+-20% of system time).

To compile this driver as a module, choose M here: the module will be called snd-aloop.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module snd-aloop CONFIG_SND_ALOOP : sound/drivers/Kconfig : "Generic loopback driver (PCM)" # in 2.6.37–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD
• lkddb platform "snd_aloop" : CONFIG_SND CONFIG_SND_ALOOP : sound/drivers/aloop.c # in 3.6–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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