Virtual Stateless Decoder Driver (visl)

modulename: visl.ko

configname: CONFIG_VIDEO_VISL

Linux Kernel Configuration
└─>Device Drivers
└─>Multimedia support
└─>Media drivers
└─>V4L test drivers
└─>Virtual Stateless Decoder Driver (visl)
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
A virtual stateless decoder device for uAPI development purposes.

A userspace implementation can use visl to run a decoding loop even
when no hardware is available or when the kernel uAPI for the codec
has not been upstreamed yet. This can reveal bugs at an early stage.

When in doubt, say N.

source code: