An SDL based Audio Visualizer using the fftw3 library

• YouTube Link: https://youtu.be/W0MV3Ehnk0A
• Library Pre-requisites :
  • *nix:
    • Debian Based Distributions : build-essential libsdl2-dev libsdl2-image-dev libsdl2-ttf-dev libfftw3-dev
    • Others : Install equaivalent packages of the above mentioned.
    • youtube-dl and ffmpeg required for the download feature or alternatively you can run install.sh
    • P.S.: Make sure you have GLIB_C2.29 or above (comes preinstalled from Ubuntu_19.04 onwards)
  • Win64:
    • run install.ps1 with powershell
    • minGW (GCC 64-bit with 'posix' thread model)
    • You can install GCC with posix thread model with chocolatey - choco install winlibs-llvm-free
• Compile with make and run with ./musico
• Terminal usage:
  • ./musico -f Path_to_wav_file to play a certain song
  • ./musico -r for recording and then playback
  • ./musico -R for real time audio visualization
• Key-Bindings:
  • pause/play/replay/start: space
  • stop/quit: q
  • changemode: m
• Known Bugs:
  • Window resizing doesn't work on Windows due to Microsoft's OpenGL implementaion issue mentioned here
  • If the user delays at the youtube link dialogue box the program stops responding as both win32 and posix thread models consider holding the main thread for a long amount of time as being unresponsive. We probably need to work with multithreading to resolve this issue.