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IM_WRITELINE

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


 

Index

NAME
SYNOPSIS
DESCRIPTION
BUGS
RETURN VALUE
SEE ALSO
COPYRIGHT
AUTHOR

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Time: 21:48:27 GMT, April 16, 2011