im_poutcheck(3) - Linux man page
Name
im_pincheck, im_poutcheck, im_piocheck - checks image descriptors for PIOSynopsis
#include <vips/vips.h>int im_pincheck( in )
IMAGE *in;
int im_poutcheck( out )
IMAGE *out;
int im_piocheck( in, out)
IMAGE *in, *out;
Description
im_pincheck(3) checks that an image descriptor is suitable for PIO input. If the descriptor is IM_OPENOUT and the descriptor has been written to, it is automatically 'rewound,' that is, it is closed and reopened as an IM_MMAPIN descriptor.im_poutcheck(3) checks that a descriptor is suitable for PIO output.
im_piocheck(3) simply calls in_pincheck(3) for image in and im_poutcheck(3) for image out.