From: Kieran Bingham <kieran@xxxxxxxxxxx> This short series works towards providing automated system validation by introducing the ability to capture frames using the R-Car VIN device with an HDMI cable connected to our HDMI output of the DU. To support this test, relevant patches and support must be provided by kmsxx which has been posted separately [0]: [PATCH 0/4] kms++util: Provide validation helpers This series provides an rcar_vin module to assist in detecting and identifying the correct video device to use for the video capture device. The rcar_vin module provides a lot of code which is not used specifically by the following kms-test-vin-loopback test but is kept in the module as an RFC and to stimulate discussion on implementing convenient helpers to wrap our R-Car interfaces in python modules, especially as so much platform knowledge is required to set up a capture. Finally the VIN loopback test is added which uses two pre-filled display buffers to simulate an active running display but with constant content. The display output is then captured by setting up a VideoDevice interface and registering a handler (handle_frame_capture) to process buffers when the are presented by the VIN driver. The captured frames are compared against the constant output buffer - and written to file in the event that there are any differences to allow for visual inspection and analysis. This test currently highlights potential colour space conversion issues in YUYV pipelines, and a non-determined error in ARGB configured pipelines which will be investigated separately. Further future possibilities here: - Automatically configure the media device and links with a media-ctl abstraction - Add meta-data into the output frames so that they can be correctly matched against incoming captured frames. (I'm thinking adding a QR code to each frame) -- Regards Kieran [0] https://www.mail-archive.com/linux-renesas-soc@xxxxxxxxxxxxxxx/msg21303.html Kieran Bingham (3): kms-tests: Provide .gitignore rcar_vin: Provide VIN configuration helpers tests: Add a DU->VIN loopback test .gitignore | 4 +- tests/kms-test-vin-loopback.py | 198 ++++++++++++++++++++++++++++++++++- tests/rcar_vin.py | 107 ++++++++++++++++++- 3 files changed, 309 insertions(+) create mode 100644 .gitignore create mode 100755 tests/kms-test-vin-loopback.py create mode 100755 tests/rcar_vin.py base-commit: 724e38e6c5f511030d7cbdcd40ccc3d0f8749981 -- git-series 0.9.1
