Table of Contents
im_pincheck, im_poutcheck, im_piocheck - checks image descriptors for
PIO
#include <vips/vips.h>
int im_pincheck( in )
IMAGE *in;
int im_poutcheck( out )
IMAGE *out;
int im_piocheck( in, out)
IMAGE *in, *out;
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.
All functions
returns 0 on success and -1 on error.
im_generate(3)
, im_open(3)
.
National Gallery
J. Cupitt - 23/7/93
Table of Contents