This will be an audio visualizer for raspberry pi, it's currently under development.
If you want to try to run this yourself, it....should work.
The code is currently a hybrid between C and C++. Newer stuff is in C++.
This program depends on alsa asoundlib for streaming audio input from hardware:
sudo apt-get install libasound2-dev
It also depends on raylib for graphics. See here for instructions on building raylib for raspberry pi.
It also depends on libsndfile for playback of local WAV files:
sudo apt-get install libsndfile-dev
Once your dependencies are all set up, you can build by running make in the root directory
After building you should see the executable audio_visualizer in the root directory.
Run the program and tell it which audio input to use
./audio_visualizer hw:0,0
If the first argument does not end in .wav, it'll be treated as the CAPTURE hardware device. You can list capture hardware devices available to you by running
arecord -l
Based on the output of that command, your device name is going to take the form of hw:x,y[,z],
where x is the card number, y is the device number, and z is the subdevice number (if present) of the capture device you want to use.
./audio_visualizer ./jazz-guitar-mono-signed-int.wav
if the first argument ends in .wav, it'll be treated as a local WAV file and played back on a loop.
Currently only mono signed-int formatted WAV files are supported. (You can use a tool like sox to convert WAV files).