mp3 and m4a frequency analysis
I'm doing some frequency analysis on mp3 files using FMOD's getSpectrum function and other utilities on windows. It was working very well but then I tried to load a file from iTunes which is a .m4a and learned that FMOD doesn't support that format on windows (iOS only).
I'm writing pretty much an equalizer that would work with both mp3 and m4a formats that functions on windows and on iOS. I'm creating this in C++.
Is there an api or middleware I can use to do this with similar functionality to FMOD? I've been searching but not having much luck.