hvcc

by enzienaudio

enzienaudio / hvcc

The heavy hvcc compiler for Pure Data patches.

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Heavy Compiler Collection (hvcc)

hvcc
is a python-based dataflow audio programming language compiler that generates C/C++ code and a variety of specific framework wrappers.

IMPORTANT!

This repo is currently unsupported and looking for a maintainer. The original authors will not respond to messages or issues. Bugs will not be fixed. Features will not be added. You are on your own. Good luck.

Background

The original need for

hvcc
arose from running against performance limitations while creating interactive music and sound products for the iPhone. Pure Data (libpd) was the only real choice for a design tool as it was embeddable and provided a high enough abstraction level that musicians or sound designers could be creative.

The goal was to leverage Pure Data as a design interface and statically interpret the resultant patches to generate a low-level, portable and optimised C/C++ program that would be structured to take advantage of modern hardware whilst still generating the same behaviour and audio output as Pure Data.

It has since then been expanded to provide further support for many different platforms and frameworks, especially targeting game audio production tools.

Requirements

  • python 2.7
    • enum
      (for error reporting)
    • jinja2
      (for generator templating)
    • nose2
      (for tests, optional)

Installation

$ git clone https://github.com/enzienaudio/hvcc.git

$ cd hvcc/

$ pip2.7 install -r requirements.txt

Usage

hvcc
requires at least one argument that determines the top-level patch file to be loaded.

Generate a C/C++ program from

input.pd
and place the files in
~/myProject/

$ python2.7 hvcc.py ~/myProject/_main.pd

This command will generate the following directories:

  • ~/myProject/hv
    heavylang representation of the input pd patch(es)
  • ~/myProject/ir
    heavyir representation of the heavylang patch
  • ~/myProject/c
    final generated C/C++ source files (this is what you would use in your project)

-o
Select output directory

As seen in the above command, typical output of

hvcc
is split into several directories that contain the intermediate files used by the compiler itself, the final generated source files, and any additional framework specific files and projects.

The

-o
or
--out_dir
parameter will specify where the output files are placed after a successful compile.

For example:

$ python2.7 hvcc.py ~/myProject/_main.pd -o ~/Desktop/somewhere/else/

Will place all the generated files in

~/Desktop/somewhere/else/
.

-n
Specify Patch Name

The

-n
or
--name
parameter can be used to easily namespace the generated code so that there are no conflicts when integrating multiple patches into the same project.

$ python2.7 hvcc.py ~/myProject/_main.pd -o ~/Desktop/somewhere/else/ -n mySynth

-g
Generators

Once

hvcc
has generated internal information about the patch the
-g
or
--gen
parameter can be used to specify the output files it should generate. By default it will always include
c
for the C/C++ source files and additional generators can specified for certain framework targets.

For example:

$ python2.7 hvcc.py ~/myProject/_main.pd -o ~/Desktop/somewhere/else/ -n mySynth -g unity

Will also generate a

unity
section in the output directory contain all the build projects and source files to compile a Unity plugin.

It is also possible to pass a list of generators:

$ python2.7 hvcc.py ~/myProject/_main.pd -o ~/Desktop/somewhere/else/ -n mySynth -g unity wwise js

Available generator options:

  • c
  • bela
  • fabric
  • js
  • pdext
  • unity
  • vst2
  • wwise

-p
Search Paths

hvcc
will iterate through various directories when resolving patch objects and abstractions. The
-p
or
--search_paths
argument can be used to add additional folders for
hvcc
to look in.

This can be handy when using a third-party patch library for example https://github.com/enzienaudio/heavylib.

$ python2.7 hvcc.py ~/myProject/_main.pd -o ~/Desktop/somewhere/else/ -n mySynth -p "[~/Workspace/Projects/Enzien/heavylib/, ~/Desktop/myLib/]"

--copyright
User Copyright

By default all the generated source files via

hvcc
will have the following copyright text applied to the top of the file:

Copyright (c) 2018 Enzien Audio, Ltd.

This can be changed with

--copyright
parameter

$ python2.7 hvcc.py ~/myProject/_main.pd -o ~/Desktop/somewhere/else/ -n mySynth --copyright "Copyright (c) Los Pollos Hermanos 2019"

--help

Displays all the available parameters and options for hvcc.

Documentation

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