RAWTORLE(1) 1 (1990) RAWTORLE(1)
NAME
rawtorle - Convert raw image data to RLE.
SYNOPSIS
rawtorle [ -N ] [ -s ] [ -r ] [ -w width ] [ -h height ] [
-f header-size ] [ -t trailer-size ] [ -n nchannels ] [ -a [
alpha-value ] ] [ -p scanline-pad ] [ -l left-scanline-pad ]
[ -o outfile ] [ infile ]
DESCRIPTION
This program is used to convert image data in any of a
number of "raw" forms to the RLE(5) format. The expected
input size is computed from the arguments, so that several
images may be concatenated together and will be processed in
sequence. In this case, the output file will contain
several RLE images.
OPTIONS
-N The input is in non-interleaved order, as might be
generated by the command
cat pic.r pic.g pic.b
-s The input is in scanline interleaved order.
-r Reverse the channel order. (E.g., data will be
interpreted as ABGR instead of RGBA.)
-w width
Specify the width of the input image.
-h height
Specify the height of the input image.
-f header-size
This many bytes will be skipped before starting to read
image data.
-t trailer-size
This many bytes will be skipped at the end of the image
data.
-n nchannels
The input data has this many color channels.
-a [alpha-value]
Generate a constant alpha channel. The default value
for alpha-value is 255.
-p scanline-pad
This many bytes will be skipped at the end of each
scanline.
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RAWTORLE(1) 1 (1990) RAWTORLE(1)-l left-scanline-pad
This many bytes will be skipped at the beginning of
each scanline.
-o outfile
If specified, output will be written to this file,
otherwise it will go to stdout.
infile
The input will be read from this file, otherwise, input
will be taken from stdin.
The input data is assumed to have an alpha channel if there
are 2 or 4 channels. The alpha channel is the last input
channel unless -r is specified, in which case it is the
first.
EXAMPLES
512x512 grayscale
rawtorle-w 512 -h 512 -n 1
640x512 raw RGB
rawtorle-w 640 -h 512 -n 3
picture.[rgb]
cat picture.[rgb] | rawtorle-w 640 -h 512 -n 3 -N -r
(I.e., separate red, green, blue image files. This
subsumes graytorle(1).)
JPL ODL Voyager pics
rawtorle-w 800 -h 800 -f 2508 -t 1672 -n 1 -p 36
24bit Sun raster file
rawtorle-f 32 -w ... -h ... -n 3
(But rastorle(1) is easier.)
pic.{000-100}.[rgb]
cat pic.* | rawtorle-w ... -h ... -n 3 -s -r
(I.e., each color of each scanline is in a separate
file.)
SEE ALSO
graytorle(1), rastorle(1), urt(1), RLE(5).
AUTHOR
Martin Friedmann
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