Hello!
I want to rewrite the module "shadhi.c". In every iop module are described function process() with input arguments "struct dt_dev_pixelpipe_iop_t *piece" and "const struct dt_iop_roi_t *const roi_in".
Could you explain pls how variables roi_in and piece are chosen? These values are constantly changing every time. I can't find it in the code.
What does "roi_in->scale" and "piece->iscale" mean?
Thank you.
