This is an example program using libmanta to build a simple OSC router, which sends OSC messages in response to manta touches and receives OSC messages to control the LEDs.

Prerequisites

cmake
liblo-dev (linux/MacOS)
libudev-dev (linux/MacOS)

Build Instructions

Linux and MacOS

git clone https://github.com/ssfrr/libmanta.git
cd libmanta
git submodule update --init
cd MantaOSC
mkdir build
cd build
cmake ..
make
You'll find an executable called MantaOSC in your current directory

Windows

Install msys2 from http://www.msys2.org/. Follow the instructions on that page to make sure the system is up-to-date.
Install the mingw64 toolchain and some more necessary packages by running pacman -S mingw-w64-x86_64-toolchain mingw-w64-x86_64-cmake base-devel
Make sure your shell is starting with the MSYSTEM=MINGW64 environment variable set, which will set your paths to use the ming64 compiler. which gcc should show you /mingw64/bin/gcc or similar.
Download a PKGBUILD file for liblo: wget https://raw.githubusercontent.com/guysherman/MINGW-packages/guypkgs/mingw-w64-liblo/PKGBUILD
from the folder with the PKGBUILD file, run makepkg-mingw -si. You might get some complaints about not having the i686 toolchain, but that's OK.
from the MantaOSC directory (in this repository) create a build directory and cd into it, e.g. mkdir build-win64; cd build-win64
run cmake -G"MSYS Makefiles" ..
run make

Build Troubleshooting:

file failed to open for writing (Invalid argument):

This can happen while running cmake on Windows. I'm not sure if it's a path length issue or a windows/unix path issue, but moving the libmanta project directory to within my MSYS2 home directory solved it.

Usage

MantaOSC sends to localhost on port 31416 and receives commands on port 31417.

Continuous messages are sent whenever the value changes, and velocity messages are sent on initial press, and again on release (with a velocity of zero)

Sent Addresses

The following addresses each send an ID and value. The IDs are zero-indexed.

"/manta/continuous/pad"
"/manta/continuous/slider"
"/manta/continuous/button"
"/manta/velocity/pad"
"/manta/velocity/button"

Receive Addresses

For commands that take color strings, the value can be either "red", "amber", or "off".

"/manta/ledcontrol"

Takes a string and an integer. The string can have the values "padandbutton", "slider" or "button", and the integer is a 1 to enable and 0 to disable OSC control of those LEDs. When not under OSC control the LEDs are lit automatically on touch by the internal firmware of the Manta.

"/manta/led/pad"

Takes a color string and an integer representing the pad LED to be set.

"/manta/led/pad/row"

Takes a color string and two integers. The first indicates the row to be set, and the second represents a bitmask of which pads in the row should be set to the given color.

"/manta/led/pad/column"

Takes a color string and two integers. The first indicates the column to be set, and the second represents a bitmask of which pads in the column should be set to the given color.

"/manta/led/pad/frame"

Takes a string and a binary blob. The first is a color string and the second is interpreted as a set of bitmasks for all 6 pad rows. If fewer than 6 bytes are given, the rest are considered zero. If more are given they are ignored.

If instead of a color the first argument is "all", the binary blob should be 12 bytes and sets both the amber and red LEDs (in that order). Any bits set to zero in both masks cause the corresponding LED to be turned off.

"/manta/led/slider"

Takes a color string and two integers. The first integer is the slider ID and the second is a bitmask on the slider to be set to the given color.

"/manta/led/button"