[luatex] callback for image loading?

[Hans Hagen]

On 9/28/2018 3:19 PM, Patrick Gundlach wrote:
> Hello all,
> 
> is there a callback for image loading (reading)?
> 
> I use
> 
> img.scan{filename = "some filename" }
> 
> which (if I understand it correctly) calls find_image_file (with kpathsea disabled) but no reader callback.
> 
> Why I am asking: I have an image caching mechanism for images got via http(s) and I'd like to serve these images from memory.
no, because luatex parses the image (random access) and buffering huge 
bitmaps is not really an option

what i do in such case i cache on disk

Hans


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