[k3b] [Bug 383211] New: Blu-ray media sizes in fill widget are incorrect

[Henryk Hecht]

https://bugs.kde.org/show_bug.cgi?id=383211

            Bug ID: 383211
           Summary: Blu-ray media sizes in fill widget are incorrect
           Product: k3b
           Version: 17.04.3
          Platform: openSUSE RPMs
                OS: Linux
            Status: UNCONFIRMED
          Severity: minor
          Priority: NOR
         Component: Data Project
          Assignee: k3b at kde.org
          Reporter: ml at hhecht.e4ward.com
                CC: michalm at jabster.pl, trueg at kde.org
  Target Milestone: ---

Created attachment 107116
  --> https://bugs.kde.org/attachment.cgi?id=107116&action=edit
patch to correct BD capacity for 25 and 50 "GB" discs

When adding files to a data project without a blank disc in the drive, k3b will
use the built-in capacities for Blu-ray media.  However, these are wrong.  k3b
thinks that blu-ray media is 25 or 50 GB ("GiB"), but it is actually only
slightly more than 25/50 "salesman GB", a little less than 23.3 "real" GB. 
This means that the capacity gauge cannot be used precisely when making data
projects, and one must resort to shell tools, or one's favorite pocket
calculator.

I think this bug is at least a couple of years old; I am surprised that it is
still around, and that no one has reported it.  The fix is very simple, and I
have attached a patch.  In fact, one can see from the adjacent code comment
that the author knows the values are wrong.

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