CONFIG_SND_PCMTEST: Virtual PCM test driver

General informations

The Linux kernel configuration item CONFIG_SND_PCMTEST:

• prompt: Virtual PCM test driver
• type: tristate
• depends on: CONFIG_DEBUG_FS
• defined in sound/drivers/Kconfig
• found in Linux kernels: 6.5–6.17, 6.18-rc+HEAD
• modules built: snd-pcmtest

Help text

Say 'Y' or 'M' to include support for the Virtual PCM test driver. This driver is aimed at extended testing of the userspace applications which use the ALSA API, as well as the PCM middle layer testing.

It can generate random or pattern-based data into the capture stream, check the playback stream for containing the selected pattern, inject time delays during capture/playback, redefine the RESET ioctl operation to perform the PCM middle layer testing and inject errors during the PCM callbacks. It supports both interleaved and non-interleaved access modes. You can find the corresponding selftest in the 'alsa' selftests folder.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module snd-pcmtest CONFIG_SND_PCMTEST : sound/drivers/Kconfig : "Virtual PCM test driver" # in 6.5–6.17, 6.18-rc+HEAD
• lkddb platform "pcmtest" : CONFIG_SND CONFIG_SND_PCMTEST : sound/drivers/pcmtest.c # in 6.5–6.17, 6.18-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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