IM_WRITELINE
Section: C Library Functions (3)
Updated: 22 April 1991
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NAME
im_writeline - writes a line of data in the image descriptor
SYNOPSIS
#include <vips/vips.h>
int im_writeline(ypos, image, buffer)
int ypos;
IMAGE *image;
char *buffer;
DESCRIPTION
im_writeline(3)
writes the ypos line of an image held in buffer to either the output
buffer image (previously set by im_setbuf(3)) or to an output file
(previously set by im_openput(3)). The function provides uniform treatment of
output irrespectively whether it is a file or a buffer image.
You should be careful that the buffer does indeed contain enough data for a
complete line of pels --- see lsize(3).
Any evaluation callbacks which have been added to image are triggered --- see
im_generate(3) and im_add_eval_callback(3).
BUGS
This function changed in VIPS6:
programs written previously must be modified by removing the last argument
of the old im_writeline(3).
RETURN VALUE
The function returns 0 on success and -1 on error.
SEE ALSO
im_setbuf(3), im_openout(3), im_add_eval_callback(3).
COPYRIGHT
N. Dessipris
AUTHOR
N. Dessipris 23/04/1991