Minimal spectrum analyser for pulseaudio.

Requires pulseaudio, fftw3, GLFW, GLEW and an opengl implementation.

Options

• -m for mono (defaults to stereo)
• -s[N] to set FFT size (must be a power of two; note the lack of a space between the s and the number. Defaults to 2048)
• -r[N] to set sample rate (also no space between the r and the number. Defaults to 44100)

License: MIT.

note: does not comply with ISO C++ (variadic macros where the extra arguments are not used, and C99 designated initializers), but g++ and clang++ are fine with it