RLESWAP(1) 1 (Jan 22, 1987) RLESWAP(1)
NAME
rleswap - swap the channels in an RLE file.
SYNOPSIS
rleswap [ -v ] [ -f from-channels,... ] [ -t to-channels,...
] [ -d delete-channels,... ] [ -p channel-pairs,... ] [ -o
outfile ] [ infile ]
DESCRIPTION
This program can be used to select or swap the color
channels in a RLE(5) file. The major options provide four
different ways of specifying a mapping between the channels
in the input file and the output file. Only one of the
options -f, -t, -d, or -p may be specified. If the optional
infile is not given, input will be read from standard input.
A new RLE(5) file will be written to the standard output or
to outfile, if specified. The output image will be similar
to the input, except for the specified channel remappings.
OPTIONS
-v Print the channel mappings that will be performed on
the standard error output.
-f Following this option is a comma separated list of
numbers indicating the input channel that maps to each
output channel in sequence. I.e., the first number
indicates the input channel mapping to output channel
0. The alpha channel will be passed through unchanged
if present. Any input channels not mentioned in the
list will not appear in the output.
-t Following this option is a comma separated list of
numbers indicating the output channel to which each
input channel, in sequence, will map. I.e., the first
number gives the output channel to which the first
input channel will map. No number may be repeated in
this list. The alpha channel will be passed through
unchanged if present. Any output channel not mentioned
in the list will not receive image data. If there are
fewer numbers in the list than there are input
channels, the excess input channels will be ignored.
If there are more numbers than input channels, it is an
error.
-d Following this option is a comma separated list of
numbers indicating channels to be deleted from the
input file. All other channels will be passed through
unchanged. The alpha channel may be specified as -1.
-p Following this option is a comma separated list of
pairs of channel numbers. The first channel of each
pair indicates a channel in the input file that will be
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RLESWAP(1) 1 (Jan 22, 1987) RLESWAP(1)
mapped to the the channel in the output file indicated
by the second number in the pair. No output channel
number may appear more than once. Any input channel
not mentioned will not appear in the output file. Any
output channel not mentioned will not receive image
data. The alpha channel may be specified as -1.
SEE ALSO
mergechan(1), urt(1), RLE(5).
AUTHOR
Spencer W. Thomas, University of Utah
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