libsunvox

Crystal bindings and high-level object-oriented wrapper for the SunVox Library (v2.1.4d).

Installation

Add the dependency to your shard.yml:

dependencies:
  libsunvox:
    github: sol-vin/libsunvox

Install the native SunVox shared library for your platform:

Linux

Run sudo ./rsrc/linux/install.sh to install sunvox.so to /usr/lib/.

macOS

Run sudo ./rsrc/macos/install.sh to install sunvox.dylib to /usr/local/lib/.

Windows

Run ./rsrc/windows/install.ps1 (as Administrator) to install sunvox.dll and sunvox.lib to C:\sunvox, then add C:\sunvox to your environment:

$env:LIB = "${env:LIB};C:\sunvox"
$env:PATH = "${env:PATH};C:\sunvox"

Docs

https://sol-vin.github.io/libsunvox/

Usage Example (Object-Oriented API)

require "libsunvox"

SunVox.start_engine(no_debug_output: true) do
  SunVox::Slot.open(SunVox::Slot::One) do |slot|
    slot.name = "Vocoder Demo"
    slot.volume = 256

    # Create and load modules
    input     = slot.add_module(SunVox::Modules::Synths::INPUT, name: "Mic")
    generator = slot.add_module(SunVox::Modules::Synths::GENERATOR, name: "Gen")
    carrier   = slot.add_module(SunVox::Modules::Effects::AMPLIFIER, name: "Carrier")
    modulator = slot.add_module(SunVox::Modules::Effects::AMPLIFIER, name: "Modulator")
    vocoder   = slot.load_module("./rsrc/vocoder.sunsynth")

    # Connect modules using the chainable >> operator
    input     >> modulator >> vocoder >> slot.output
    generator >> carrier   >> vocoder

    SunVox.update_input

    # Set module controllers by name or index
    generator["Waveform"] = 1
    carrier[0]   = 0x4000
    carrier[1]   = 0x8000
    modulator[0] = 0x69c0
    modulator[1] = 0

    # Play a chord across tracks 0..4
    [SunVox::Note::D1, SunVox::Note::D2, SunVox::Note::D3, SunVox::Note::G4, SunVox::Note::D5].each_with_index do |note, track|
      generator.play_note(note, track: track, velocity: 128)
    end

    sleep
  end
end

Procedural API Example

All classic SunVox.* module-level functions remain available and accept either SunVox::Slot / SunVox::Module / SunVox::Pattern wrappers or raw Int32 IDs:

require "libsunvox"

# Set the audiodevice and audiodevice_in to your device then speak into your microphone :)
SunVox.start_engine(config: "audiodriver=alsa|audiodevice=hw:0,0|audiodevice_in=hw:2,0", no_debug_output: true, one_thread: false)
slot = SunVox.open_slot(SunVox::Slot::One)

input = SunVox.new_module(slot, SunVox::Modules::Synths::INPUT)
generator = SunVox.new_module(slot, SunVox::Modules::Synths::GENERATOR)
carrier = SunVox.new_module(slot, SunVox::Modules::Effects::AMPLIFIER)
modulator = SunVox.new_module(slot, SunVox::Modules::Effects::AMPLIFIER)
vocoder = SunVox.load_module(slot, "./rsrc/vocoder.sunsynth")

# Connect the module to the output
SunVox.connect_module(slot, input, modulator)
SunVox.connect_module(slot, generator, carrier)
SunVox.connect_module(slot, carrier, vocoder)
SunVox.connect_module(slot, modulator, vocoder)
SunVox.connect_module(slot, vocoder, SunVox::OUTPUT_MODULE)

SunVox.update_input

SunVox.send_event(slot, 0, SunVox::Note::None, 0, generator, ctl: 2, ctl_value: 0x1)

# Set carrier controls
SunVox.send_event(slot, 0, SunVox::Note::None, 0, carrier, ctl: 1, ctl_value: 0x4000)
SunVox.send_event(slot, 0, SunVox::Note::None, 0, carrier, ctl: 2, ctl_value: 0x8000)

# Set modulator controls
SunVox.send_event(slot, 0, SunVox::Note::None, 0, modulator, ctl: 1, ctl_value: 0x69c0)
SunVox.send_event(slot, 0, SunVox::Note::None, 0, modulator, ctl: 2, ctl_value: 0)

SunVox.send_event(slot, 0, SunVox::Note::D1, 0, generator)
SunVox.send_event(slot, 1, SunVox::Note::D2, 0, generator)
SunVox.send_event(slot, 2, SunVox::Note::D3, 0, generator)
SunVox.send_event(slot, 3, SunVox::Note::G4, 0, generator)
SunVox.send_event(slot, 4, SunVox::Note::D5, 0, generator)

sleep

Development

Run the test suite (uses offline audio mode so no sound hardware is required):

crystal spec

Contributing

Fork it (https://github.com/sol-vin/libsunvox/fork)
Create your feature branch (git checkout -b my-new-feature)
Commit your changes (git commit -am 'Add some feature')
Push to the branch (git push origin my-new-feature)
Create a new Pull Request

Contributors

Ian Rash - creator and maintainer