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A FAUST wrapper-generator for ChucK Ugens
C C++ Shell
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faust2ck - A FAUST wrapper-generator for ChucK Ugens. ======== FAUST is a functional language for defining DSP structures that can be used for real-time audio computing. It can generate block diagrams and also C++ code which will execute the given routine. This is an ideal way to create unit generators (UGens) for ChucK. The ChucK data structures can be a bit weird and the learning curve for hacking on ChucK can be a little steep. Using FAUST, you can concentrate on the DSP algorithm, and allow faust2ck to take care of creating ChucK-compatible C++ code so that you can instantiate your new DSP object in a ChucK program. Please see the FAUST websites for more details, online tutorials, and even an online compiler that you can try: http://faust.grame.fr/ http://sourceforge.net/projects/faudiostream/ This document describes how to use faust2ck. This code is directly based off of Scott Sinclair's original faust2ck, without which this latest iteration would not exist: http://www.music.mcgill.ca/~sinclair/content/blog/faust2ck_a_faust_wrapper-generator_for_chuck_ugens Build/Install ============= To build faust2ck, first download the source: $ git clone https://github.com/spencersalazar/faust2ck.git Then compile: $ cd faust2ck/src $ make Then install! $ sudo make install Usage ===== Running faust2ck with no parameters will give you a usage string: $ faust2ck Usage: faust2ck <filename.dsp> You can see that it requires a single input, the name of a FAUST .dsp file. How you come up with this .dsp file is beyond the scope of this document, but check out here: http://faust.grame.fr/index.php/online-examples for some cool examples. When you execute faust2ck with a suitable .dsp file: $ faust2ck filename.dsp it will generate a ChuGin called "filename.chug". You can load this into ChucK with the -g option: $ chuck -gfilename but chuck will exit immediately because you haven't provided it with a script to run. If you want to load your new ChuGin without the annoying -g option, simply copy it to your ChuGin directory (typically /usr/lib/chuck). License ======= This code is licensed under the GNU General Public License (GPL) v2 or above. Please see COPYING for details, or visit: http://www.gnu.org/licenses/old-licenses/gpl-2.0.html Technical ========= You wrote a string parsing and XML reading program like this, in 2008, in C ???! Are you mad? -------------------------------------------------- Yes, a sane person would probably not do such a thing. The FAUST XML output is so simple, however, and generally predictable, that I didn't feel it was necessary to bring in a lot of external dependencies for such a small application. So I ended up basically writing a small, inadequate macro replacement parser, which was actually kind of fun. Of course, if it ever called for more a complex solution I'd probably re-do it in Perl or Python. But this'll do for now, and it means the program is tiny and easy to execute on any computer without installing huge libraries. Of course, it does depend on 'sed' to generate the template for inclusion in the final program. I wanted to include it right in the executable instead of having faust2ck load an external file that would always be exactly the same. Unfortunately the C preprocessor doesn't make it easy, so sed is just used to wrap lines of the template file in double-quotes ("") and backslash-escape a few special characters. faust2ck is distributed with the template already generated so that it can be compiled without needing to have sed around.