[wp-trac] [WordPress Trac] #40087: Add ability to filter Imagemagick processing options

[WordPress Trac]

#40087: Add ability to filter Imagemagick processing options
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 Reporter:  aesqe            |      Owner:
     Type:  feature request  |     Status:  new
 Priority:  normal           |  Milestone:  Awaiting Review
Component:  Media            |    Version:  4.7.3
 Severity:  normal           |   Keywords:
  Focuses:                   |
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 Hi everyone :)

 TLDR: I want to be able to control Imagemagick's sampling factor value for
 JPEG images.

 I haven't been able to find any info on whether it's possible to change
 this value in Imagemagick's defaults, and there don't seem to be any
 usable filters or actions in WP_Image_Editor_Imagick class.

 To be able to set the sampling factor, one needs access to the Imagemagick
 instance, which is a  protected var in the editor class, I guess for a
 reason.

 Options:

 a) a new public WP_Image_Editor_Imagick method which would be able to call
 Imagemagick instance methods, made available via an ''add_action'' call
 b) add something like the following code to the ''set_quality'' method:
 {{{
 if( defined("IMAGICK_SAMPLING_FACTOR") ) {
     $this->image->setImageProperty('jpeg:sampling-factor',
 IMAGICK_SAMPLING_FACTOR);
 }
 }}}

 Any ideas?

 Thanks!

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Ticket URL: <https://core.trac.wordpress.org/ticket/40087>
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