DragonFly On-Line Manual Pages
RLE_PUTROW(3) DragonFly Library Functions Manual RLE_PUTROW(3)
NAME
rle_putrow - Write a row (scanline) of data to an RLE file.
SYNOPSIS
#include <rle.h>
void rle_putrow( rows, length, the_hdr );
rle_pixel ** rows;
int length;
rle_hdr * the_hdr;
DESCRIPTION
Rle_putrow is called for each output scanline when creating an RLE(5)
image. Rows is an array of pointers to the pixel data for the color
components of the scanline. Rows should have the_hdr->ncolors
elements. If an alpha channel is being saved, rows[-1] should point to
the alpha channel data. Length is the number of pixels in the
scanline. Rows[i] should point to the the_hdr->xmin element of the
scanline.
The function rle_row_alloc(3) will properly allocate memory for use by
rle_putrow.
SEE ALSO
rle_hdr(3), rle_skiprow(3), rle_putraw(3), rle_puteof(3),
rle_row_alloc(3), rle_row_free(3), librle(3), RLE(5).
AUTHOR
Spencer W. Thomas, Todd Fuqua
BUGS
Having the scanline indexed from xmin is an incredible botch. Its
origin lies in the deep dark history of the raster toolkit, and it
seems it's too late to change it now.
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