en Copyright 2015 Java http://172.16.0.5:8080/history/linux-6.15/drivers/media/test-drivers/visl/Makefile#0c078e31 media: visl: add virtual stateless decoder driverA virtual stateless device for stateless uAPI development purposes.This tool's objective is to help the development and testing ofuserspace applications that use the V4L2 stateless API to decode media.A userspace implementation can use visl to run a decoding loop even whenno hardware is available or when the kernel uAPI for the codec has notbeen upstreamed yet. This can reveal bugs at an early stage.This driver can also trace the contents of the V4L2 controls submittedto it. It can also dump the contents of the vb2 buffers through adebugfs interface. This is in many ways similar to the tracinginfrastructure available for other popular encode/decode APIs out thereand 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. TheV4L2 test pattern generator is used to write various debug informationto 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> List of files: /linux-6.15/drivers/media/test-drivers/visl/Makefile Sat, 05 Nov 2022 13:58:42 +0000 Daniel Almeida <daniel.almeida@collabora.com> http://172.16.0.5:8080/history/linux-6.15/drivers/media/test-drivers/visl/Makefile#04e27f79 media: visl: add virtual stateless decoder driverA virtual stateless device for stateless uAPI development purposes.This tool's objective is to help the development and testing ofuserspace applications that use the V4L2 stateless API to decode media.A userspace implementation can use visl to run a decoding loop even whenno hardware is available or when the kernel uAPI for the codec has notbeen upstreamed yet. This can reveal bugs at an early stage.This driver can also trace the contents of the V4L2 controls submittedto it. It can also dump the contents of the vb2 buffers through adebugfs interface. This is in many ways similar to the tracinginfrastructure available for other popular encode/decode APIs out thereand 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. TheV4L2 test pattern generator is used to write various debug informationto the capture buffers instead.Signed-off-by: Daniel Almeida <daniel.almeida@collabora.com>Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> List of files: /linux-6.15/drivers/media/test-drivers/visl/Makefile Sat, 05 Nov 2022 13:58:42 +0000 Daniel Almeida <daniel.almeida@collabora.com>