drivers/media/test-drivers/visl

Virtual Stateless Decoder (visl) V4L2 test driver

A virtual test module that simulates a stateless video decoder for the Video4Linux2 framework. It drives no real hardware; instead it lets developers and continuous-integration systems exercise the kernel's stateless codec APIs (H.264, HEVC, VP9, AV1, and similar) by producing visualisations of the decode requests userspace submits.

not-a-driver conf=1.00 deploy=none replacement=none subsystem=media category=not-a-driver

100%

recommendation

This is not actually a hardware driver; it is a developer and CI test harness sitting under the media subsystem's test-drivers tree. It exists to validate the V4L2 stateless decoder uAPI and userspace stacks like GStreamer and FFmpeg without needing a physical codec chip, so categorising it as shipping hardware support would be a mistake.

repository signals

18 files

4,216 source lines

24 commits, 5y

+4,412 / −160 lines added / removed, 5y

12 authors, 5y

monthly commits · 2021-04-21 → 2026-04-21 · 24 total · active in 14/61 months

sources

No sources cited.

codex reasoning notes (technical)

Not a driver directory: V4L2 test-driver code under drivers/media/test-drivers/visl, used for validation/simulation rather than kernel-bound shipping hardware support.