Estimated seconds of computation left
Number of pels calculated so far
Percent complete
Time we have been running
Start time
Number of pels we expect to calculate
If set, vips will print messages about the progress of computation to stdout. This can also be enabled with the --vips-progress option, or by setting the environment variable VIPS_PROGRESS.
%TRUE to enable progress messages
A structure available to eval callbacks giving information on evaluation progress. See #VipsImage::eval.