Use v4l2 ioctls directly

[DemiMarie]

v4l2-ctl’s output format appears to be meant for human use, rather than programmatic use. A better approach would be to use the v4l2 ioctls directly.

[ElliotKillick]

I totally agree and knew this when I was working with v4l2-ctl, however, at the time I was really just looking for a quick solution without getting into C ioctls.

PRs are welcome!

[ElliotKillick]

Actually, I decided I'm going to implement this now instead of having to do something in Python only to replace it with a better solution.

I already have working C code for getting the webcam formats, now I just need to get the dimensions and FPS of each then implement a function to get the best format.

[DemiMarie]

Actually, I decided I'm going to implement this now instead of having to do something in Python only to replace it with a better solution.

👍

I already have working C code for getting the webcam formats, now I just need to get the dimensions and FPS of each then implement a function to get the best format.

Is the plan to then construct an appropriate GStreamer pipeline accordingly?

[ElliotKillick]

Is the plan to then construct an appropriate GStreamer pipeline accordingly?

Yes, I'm currently working on this C program.

[DemiMarie]

Is the plan to then construct an appropriate GStreamer pipeline accordingly?

Yes, I'm currently working on this C program.

Does this mean that qvc.Webcam will be written entirely in C, including the UI? Or do you plan on using Python too? Both are fine; I just want to know what the plans are.

[ElliotKillick]

Currently the plan for the C program is to implement the webcam best format setter program as well as something to call to replace instances of v4l2-ctl in the Python scripts. No plans to replace the Python scripts.