linux/drivers/media/test-drivers/visl/Kconfig
Daniel Almeida 0c078e310b media: visl: add virtual stateless decoder driver
A virtual stateless device for stateless uAPI development purposes.

This tool's objective is to help the development and testing of
userspace applications that use the V4L2 stateless API to decode media.

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.

This driver can also trace the contents of the V4L2 controls submitted
to it.  It can also dump the contents of the vb2 buffers through a
debugfs interface. This is in many ways similar to the tracing
infrastructure available for other popular encode/decode APIs out there
and can help develop a userspace application by using another (working)
one as a reference.

Note that no actual decoding of video frames is performed by visl. The
V4L2 test pattern generator is used to write various debug information
to the capture buffers instead.

Signed-off-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-11-25 07:32:16 +00:00

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# SPDX-License-Identifier: GPL-2.0+
config VIDEO_VISL
tristate "Virtual Stateless Decoder Driver (visl)"
depends on VIDEO_DEV
select FONT_SUPPORT
select FONT_8x16
select VIDEOBUF2_VMALLOC
select V4L2_MEM2MEM_DEV
select MEDIA_CONTROLLER
select MEDIA_CONTROLLER_REQUEST_API
select VIDEO_V4L2_TPG
help
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.
config VISL_DEBUGFS
bool "Enable debugfs for visl"
depends on VIDEO_VISL
depends on DEBUG_FS
help
Choose Y to dump the bitstream buffers through debugfs.
When in doubt, say N.