Ardour Control

OSC Control Surface for Ardour. Based on Len Ovens' control surface.

Requirements

• Ardour 5.12
• Open Stage Control

Features

• all tracks (using banking)
• transport
• plugins (ladspa-like generic ui)
• sends/receives

Getting started

• Enable OSC in ardour
• launch Open Stage Control :

# Running from sources:
npm start -- -l path/to/ardour.js -c path/to/ardour-plugins-module.js -s 127.0.0.1:3819

# Running from binaries:
open-stage-control -- -l path/to/ardour.js -c path/to/ardour-plugins-module.js -s 127.0.0.1:3819

# Where 127.0.0.1:3819 is ardour's listening 'ip address:osc port'

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Troubleshooting

If the interface doesn't sync properly, try increasing the udp buffer size : https://www.systutorials.com/241303/how-to-enlarge-linux-udp-buffer-size/

# check buffer size
/proc/sys/net/core/rmem_default

# change buffer size
sudo sysctl -w net.core.rmem_default=262144

Screenshots

6932dba69fd9e1ea6fd9b054f5a658953b43eb41

Know bug

• With 5 or more ardour's channels, some OSC messages can be drop by the kernel. For fix it change the buffer size with :
  • for a temporary fix

  # echo '1703936' > /proc/sys/net/core/rmem_default
  

  • or a permanent fix

  # echo 'net.core.rmem_default='1703936' >> /etc/sysctl.d/11-osc-net-patch.conf