Hi Ricardo On Thu, 12 Dec 2024 at 12:14, Ricardo Ribalda <ribalda@xxxxxxxxxx> wrote: > > Hi > > For a system with multiple cameras (think of a phone or a tablet), > userspace needs to know if the camera is facing the user or the world. > > AFAIK, we have no way to tell userspace about this it has to rely to > tricks/hardcoding. Eg for UVC cameras they match the vid/pid or the > camera name. > > Assuming we define a new field in the acpi table/device tree to > describe this.... Would it be an option to add a new V4L2 standard > control for this? Doesn't V4L2_CID_CAMERA_ORIENTATION already meet the control requirement? "This read-only control describes the camera orientation by reporting its mounting position on the device where the camera is installed." [1] Dave [1] https://www.kernel.org/doc/html/latest/userspace-api/media/v4l/ext-ctrls-camera.html > Any thoughts? > > Thanks! > > -- > Ricardo Ribalda > Software Engineer > ribalda@xxxxxxxxxx >
