Camera support for Sony Xperia

[elesto]

Camera preview is wrong on my Sony Xperia 5 II.

Steps to reproduce

Own a Sony Xperia 5 II
Try using app

Expected behaviour

Full screen camera

Actual behaviour

Cropped camera view

Would you like to work on the issue?

I have no coding experience but i can provide help with testing and more information.

[syskill]

Same on my OnePlus 6T, although the OnePlus 5T that I was using until very recently does not have this problem. ETA both devices run LineageOS 18.

Also on my OnePlus 6T, this app can't seem to focus the camera properly, which means that scans using the image processor come out all white. Idk if that is related, but maybe both are due to the camera API level?

[afleuryg]

I'm not a maintainer for OpenNoteScanner, but I would say it is a problem of API level and/or of camera driver. In the case of the Xperia in particular, the camera subsystem is only usable with full functionality by Sony themselves; they lock the camera resolution available throught the standard API.

I had the same type of problem with my Xperia Z5 - nice camera, only usable with the sony photo app. All other camera app were limited.

[syskill]

Also on my OnePlus 6T, this app can't seem to focus the camera properly, which means that scans using the image processor come out all white. Idk if that is related, but maybe both are due to the camera API level?

I'm still using the same OnePlus 6T, now running LineageOS 22. This issue with the camera being cropped has long been fixed for me (I don't recall when or how), but I've had major difficulties getting the camera to focus properly ever since. It's been taking me ten or twenty attempts to get a decent scan of a document, making the app borderline unusable.

Today in desparation I tried uninstalling the Play Store build of the app and installing the F-Droid build instead. The F-Droid build wouldn't function without OpenCV. I reinstalled the Play Store build, and now it works perfectly! Apparently this focus problem that's been making me miserable for years, was caused by my unchecking the "Match preview aspect ratio" option in an attempt to fix the cropping issue. 😖

I would suggest removing that option from the app, and if possible launching it into the sun.