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Message-ID: <cover.1691096157.git.soyer@irl.hu>
Date: Thu, 3 Aug 2023 23:28:56 +0200
From: Gergő Köteles <soyer@....hu>
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
Gergő Köteles <soyer@....hu>
Subject: [RFC PATCH 0/2] media: v4l2: map UVC_CT_ROLL_ABSOLUTE_CONTROL
Hi,
Logitech Streamcam can be mounted in 'portrait mode' as well.
It reports the current roll (-90, 0, 90, 180) with
UVC_CT_ROLL_ABSOLUTE_CONTROL.
This RFC defines V4L2_CID_ROLL_ABSOLUTE, and maps
UVC_CT_ROLL_ABSOLUTE_CONTROL to make it available to
userspace.
Then, the userspace can rotate the stream based on the roll.
Is it better to use V4L2_CID_CAMERA_SENSOR_ROTATION for this?
The value set matches that control.
If yes, is it worth mapping UVC_CT_ROLL_ABSOLUTE_CONTROL to
V4L2_CID_CAMERA_SENSOR_ROTATION for this camera only?
Any feedback is greately appreciated.
Gergő Köteles (2):
media: v4l2: ctrls: Add ROLL_ABSOLUTE control
media: v4l2: map UVC_CT_ROLL_ABSOLUTE_CONTROL
.../userspace-api/media/v4l/ext-ctrls-camera.rst | 5 +++++
drivers/media/usb/uvc/uvc_ctrl.c | 9 +++++++++
drivers/media/v4l2-core/v4l2-ctrls-defs.c | 1 +
include/uapi/linux/v4l2-controls.h | 2 ++
4 files changed, 17 insertions(+)
base-commit: 06c2afb862f9da8dc5efa4b6076a0e48c3fbaaa5
--
2.41.0
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