indi_sv305_ccd: Binning that the camera does not support can be selected.

[jctk]

Describe the bug
Binning that the camera does not support can be selected.

To Reproduce
Exact steps to reproduce the behavior.

1. Connect SV905C
2. Change binning to 3 in Ekos Camera module. SV905C supports only BINNING 1 and 2.
3. I can select Binning 3 which the camera does not support. When the camera takes a picture, it does not generate an error and the FITS Header also records XBINNING 3 and YBINNING 3.

Expected behavior
Set the Binning choice in the INDI driver to the Binning supported by the camera during Camera Connect.

Screenshots

Desktop (please complete the following information):

• OS: KStars on Windows 11, StellarMate OS 64bit on Raspberry 4B
• INDI Version 1.9.7, KStars Version 3.6 Stable

[knro]

updateCCDBin in the driver can be updated to reject anything not 1 and 2.

[jctk]

Thanks
I'll check it later.

[knro]

Can you please check if the issue is resolved?

[jctk]

I cannot check this issue yet.
I have not yet started to fix this issue.

[jctk]

Could it be that INDI 1.9.9 is about to be released?
Should I hurry to fix this issue?

[knro]

INDI 1.9.9 is due Nov 30th so it would be great if this is resolved before then. Two weeks left.

[jctk]

Okay, I'll give it a try. Please wait for me.

[jctk]

I set out to fix it and found that this is not a bug.

The SVBONY CCD INDI driver uses INDI's software binning.
In other words, it is not limited by the binning supported by the camera.
Therefore, this issue is not a problem that needs to be fixed in a hurry.

I would consider rewriting the driver using the SVBONY Camera SDK binning mechanism after the release of INDI 1.9.9. I do not fully understand the INDI mechanism for binning.