Are VIPS_MAX_WIDTH and VIPS_MAX_HEIGHT restrictions on the source or ouput image?

[EyePulp]

A question on VIPS_MAX_WIDTH, VIPS_MAX_HEIGHT and VIPS_MAX_RESOLUTION;

This seems like a really dumb thing to have to ask, but after re-reading the docs, I still wasn't sure. Are these arguments limiting the allowed size of the actual input/source image or the allowed output parameters/dimensions?

When the docs say

imagor checks the image type and its resolution before the actual processing happens

To me that reads that it's checking the source image -- otherwise if it's looking at the requested output, then I'd say something like

imagor checks the requested image type and resolution parameters before the actual processing happens

Happy to submit a PR to this effect if it's the latter case.

Thanks!

[EyePulp]

Adding this tidbit -

We've got an example of a source image that's over the VIPS_MAX_WIDTH, but that has a .jpeg extension and returns content-type: binary/octet-stream. It gets processed without issue.

Compared to another oversized source image, with a .jpg extension which returns content-type: image/jpg, and any imagor requests for processing result in the {"message":"maximum resolution exceeded","status":422} response.