im_piocheck3
Checks image descriptors for pio
Usage
#include <vips/vips.h>
int im_pincheck( in )
IMAGE *in;
int im_poutcheck( out )
IMAGE *out;
int im_piocheck( in, out)
IMAGE *in, *out;
Overview
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.
Return value
All functions returns 0 on success and -1 on error.
Releases
4 releases since Debian 3.1 (Sarge); the text changed 1 time.