[Enhancement] Image compression quality settings for comics

Bug #1974014 reported by KRUNOSLAV PISAČIĆ

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Bug Description

Calibre was missing image compression quality setting when converting images for comics conversion (e.g. from Webp to JPG format). Default was hard-coded to 95.
I have added comic input option to set custom image compression quality.
Please see attached patch.

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KRUNOSLAV PISAČIĆ (kpisacic) wrote :
Revision history for this message
Kovid Goyal (kovid) wrote : Re: calibre bug 1974014

Some comments on your patch:

1) If we are using a single setting for compression quality it should be
a float from 0 to 1 so it can be used for both JPEG and PNG output

2) You are missing adding the option to the conversion UI in the content

 status incomplete

Changed in calibre:
status: New → Incomplete
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