Table of Contents
read98721 - read an image from the HP-98721 frame buffer
read98721
[ -b red green blue ] [ -d display ] [ -m ] [ -o outfile ] [ -p xpos ypos ]
[ -s xsize ysize ] [ -x driver ] [ -O ] [ comments ]
This program
reads an image from a HP-98721 frame buffer and writes it to an RLE(5)
file.
The file will contain three channels of 8 bits each for red, green, and
blue respectively. If an output file name is not specified the image will
be written to the standard output. The default display device and device
driver are respectively /dev/crt98721 and hp98721.
- -b red green blue
- Specifies red, green and blue pixel values for the background.
- -d display
- Gives the name of the display device from which the image is to be read.
- -m
- Saves the device color maps. By default, no color maps are saved.
- -o outfile
- Writes the image to outfile.
- -p xpos ypos
- Specifies the lower left corner
of the portion of the screen to be saved. The origin is the lower left corner
of the display, which is taken as the default starting position if this
option is not specified.
- -s xsize ysize
- Specifies the size of the image to
be read.
- -x driver
- Gives the name of the device driver to be used to communicate
with the display device.
- -O
- Specifies that the image has no background.
The
remaining arguments are taken to be comment strings of the form name=value
, and are inserted in the header of the RLE(5)
output file.
getren(1)
,
urt(1)
, RLE(5)
.
Filippo Tampieri, Program of Computer Graphics, Cornell
University.
Table of Contents