Linux ALSA driver for the Reloop Jockey 3 DJ controller

Unlike most modern DJ controllers, the Reloop Jockey 3 does not use a class-compliant USB audio/MIDI interface. It relies on a proprietary USB protocol developed by Ploytec GmbH. This driver aims to provide native Linux support via ALSA.

• MIDI: Full bidirectional support (in/out) of the control surface
• Audio:
  • Playback: 4 channels
  • Capture: 6 channels
• Sample Rates: Dynamic switching between 44.1 kHz, 48 kHz, 88.2 kHz, and 96 kHz
• Low-level USB protocol reverse-engineered via OpenVizsla + Windows/macOS driver analysis

Working

• Audio playback and capture
• MIDI I/O
• Rate switching

Pending / In Progress

• Long-term stability testing
• Confirmation of other Reloop Jockey 3 hardware
• Kernel tree integration (eventual goal)

Note: I do not personally own a Master Edition. Testing reports from users with this model would be very helpful.

• Linux kernel headers (linux-headers-$(uname -r))
• build-essential, git
• ALSA utils (alsa-utils)

git clone https://github.com/fvdpol/alsa-jockey3.git
cd alsa-jockey3
make
sudo make install

TODO add suggestions on usage (audio, midi)

The driver was developed by analyzing USB traffic between the controller and official drivers (Windows/macOS) using an OpenVizsla USB protocol analyzer. Additional insights were drawn from the Ozzy project.

Contributions are very welcome! This is a complex reverse-engineered driver. Areas especially appreciated:

• Testing on Master Edition
• Stability / error handling improvements
• Code review & refactoring
• Documentation

This project is licensed under the GPLv3. See LICENSE for details.

Ozzy — Another Ploytec-based device driver, supporting on Allen & Heath devices