frang75/nappgui_src

Image support enhancements

Opened this issue · 5 comments

SamSandq commented

I propose that the following be added to NAppGUI, as they are supported on all platforms and useful:

  • TIFF support
  • configurable quality (compression) factor for JPG
xbowzone commented

is there a way to implement lanczos and spline36 scaling/resizing for images?

frang75 commented

Hi @xbowzone
Still no. image_scale() use drawing contexts to change the image dimensions. At the moment, the unique way to ensure a method is obtain the pixel buffer with image_pixels and use a third party library.

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xbowzone commented

Thanks @frang75 I'll take a look into it and try to find some third party lib with good docs.
Also how to integrate for eg: mpv into nappgui to play videos. Apologies for being off topic here.

SamSandq commented

This is a very interesting topic… I found this https://en.wikipedia.org/wiki/Comparison_gallery_of_image_scaling_algorithms

and it provides a good overview of what’s available.

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frang75 commented

Thanks @frang75 I'll take a look into it and try to find some third party lib with good docs. Also how to integrate for eg: mpv into nappgui to play videos. Apologies for being off topic here.

NAppGUI doesn't support video, but its an interesting topic. Please, open an issue.

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