OPLabs LV2 Plugin Collection

A collection of LV2 audio plugins for band mixing, designed for PiPedal and any standard LV2 host.

Plugins

OPLabsBandChannel

Stereo channel strip for individual instrument/voice channels.

• URI: http://ourpad.casa/plugins/oplabs-band-channel#
• Class: lv2:UtilityPlugin
• Controls: Volume (-60..+6 dB), Pan, Mute, Solo, Instrument type
• Meters: Peak level L/R
• Features: State save/restore

OPLabsBandBus

Stereo bus/group processor.

• URI: http://ourpad.casa/plugins/oplabs-band-bus#
• Class: lv2:UtilityPlugin
• Controls: Volume (-60..+6 dB), Mute
• Meters: Peak level L/R
• Features: State save/restore

Directory Structure

oplabs-lv2-plugins/
├── CMakeLists.txt                  # Top-level build
├── README.md
├── lv2/
│   ├── OPLabsBandChannel.lv2/     # LV2 bundle (TTL + .so)
│   │   ├── manifest.ttl
│   │   ├── OPLabsBandChannel.ttl
│   │   └── OPLabsBandChannel.so
│   └── OPLabsBandBus.lv2/         # LV2 bundle (TTL + .so)
│       ├── manifest.ttl
│       ├── OPLabsBandBus.ttl
│       └── OPLabsBandBus.so
└── src/
    ├── CMakeLists.txt
    ├── OPLabsBandChannel.cpp
    ├── OPLabsBandChannel.hpp
    ├── OPLabsBandChannel.version
    ├── OPLabsBandBus.cpp
    ├── OPLabsBandBus.hpp
    └── OPLabsBandBus.version

Building

# Prerequisites
sudo apt install build-essential cmake lv2-dev

# Configure and build
cd ~/projects/oplabs-lv2-plugins
cmake -B build -DCMAKE_BUILD_TYPE=Release
cmake --build build

# Verify plugins
lv2ls | grep ourpad
lv2info http://ourpad.casa/plugins/oplabs-band-channel#
lv2info http://ourpad.casa/plugins/oplabs-band-bus#

The .so files are placed directly into lv2/OPLabsBandChannel.lv2/ and lv2/OPLabsBandBus.lv2/, making each directory a self-contained LV2 bundle.

Setup (local LV2 path)

Add the plugins to your LV2 path:

export LV2_PATH="${HOME}/projects/oplabs-lv2-plugins/lv2:${LV2_PATH}"

Or install system-wide:

sudo cmake --install build

Deploy to PiPedal

# Copy the lv2 directory to the Pi
scp -r lv2/* pi@192.168.0.245:/home/bib/oplabs-lv2-plugins/

# On the Pi, set up the LV2 path or symlink
# ssh pi@192.168.0.245
# export LV2_PATH="/home/bib/oplabs-lv2-plugins:$LV2_PATH"

License

MIT