realtime-fish

The part of the software that translates the users wishes to DMX in real time.

Compiling

1. Make sure that the following libraries are installed:

   • libnl-dev
   • libev-dev
   • libprotobuf-dev
   • libspdlog-dev
   • protobuf-compiler
   • xsdcxx
   • libxerces-c-dev
   • libusb-dev
   • libftdi-dev
   • pkg-config
   • liblua5.4-dev
   • libasound2-dev
   • libeigen3-dev
   • libfftw3-dev
   • libsox-dev
   • libpulse-dev
   • libsamplerate0-dev
   • libcpptrace-dev (will be removed with C++26)
   • libdwarf-dev (required by cpptrace)

   If you would also like to run unit tests, you'll also need libboost-test-dev.

   If libcpptrace-dev is not available on your system, it can be installed as follows:

   git clone https://github.com/jeremy-rifkin/cpptrace.git
   git checkout v0.8.3
   mkdir cpptrace/build
   cd cpptrace/build
   cmake .. -DCMAKE_BUILD_TYPE=Release
   make -j
   sudo make install

2. Perform a recursive clone of this repository.
3. Call gmake on the root directory of this repo. Tip: issue make -j<ncores> BUILD_MODE=Release if you're building a release.

Using the Behringer X-Touch (Extender) as Input

Please attach the devices using USB and boot them up in CtrlRel Mode with USB as their interface protocol.

USB DMX adapter support

Interfacing with Usb DMX dongles is implemented for FTDI based devices. The corresponding universe type is called ftdi_universe.

A corresponding entry in the udev rules should be made, allowing the user associated with running fish to communicate with the dongle without superuser permissions.

Warning

USB dmx adapters are bad. The better ones out there (for example the entec ones) use FTDI chips. Even those have bad timing properties and only support a small sub set of the DMX512 specification and should be avoided if a proper Art-Net node (albeit the entec ones are still better than some crap Art-Net nodes out there) can be used.

Warning

Interfacing with USB devices is always a synchronous operation. If your USB adapter is using a low speed interface (1.0, 1.1, 2.0, 3.0) this will significantly slow down the event loop!

IO Board support

Communication with the io board is done using an FTDI600Q chip as regular USB2.0 speeds are nowhere near enough. In order for this to work, the FT60X driver needs to be installed and loaded. A corresponding entry to /etc/modules should do the trick.

Unit tests

Running the unit tests requires Pulse Audio's pactl to be installed. It is usually supplied by a package called pulseaudio-utils