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GENCLOCKIMG
genclockimg is a small program to generate clock face PNG images.
I made it to generate a time index watermark for my timelapse videos.
It is written in C and uses cairo and libpopt. These are fairly common
and chances are high you already have this installed on your system.
I used rahra's cairo_jpg library to handle JPEG images.
See https://github.com/rahra/cairo_jpg
BUILDING
To build genclockimg you need libcairo and libpopt and
their accompanying dev packages installed. You'll also need
a C compiler and GNU Make.
To build the program:
make
To test:
./genclockimg
A file 'out.png' should appear.
To install:
make install
To uninstall:
make uninstall
RUNNING
By default, running the program will create a 128x128 PNG image called 'out.png'
in the current directory. The image will contain a simple analog clock indicating
the current time.
OPTIONS
-o filename
Output filename. The .png extension is NOT added automaticly!
The output is always PNG, even if you name the file differently.
-t HH:MM
Time to show on the clock
-w width
Width of the clock image in pixels
-h height
Height of the clock image in pixels
EXAMPLES
Generate a series of clock images based on the timestamps of a series of source images:
for file in *.jpg; do genclockimg -t `date -r "${file}" +"%H:%M"` -o "${file}-clock.png"; done
LICENSE
genclockimg is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
genclockimg is distributed WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU General Public License along with genclockimg.
If not, see https://www.gnu.org/licenses/.
Copyright (c) 2022, Stijn Buys
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