A simple application which draws a waveform from mic input signal or saw oscillator using SDL2, opengl2 and RtAudio.
Libraries used: SDL2 https://www.libsdl.org/
RtAudio https://www.music.mcgill.ca/~gary/rtaudio/index.html
OpenGL https://www.opengl.org/
//Install SDL2 and RtAudio Development libraries:
sudo apt install librtaudio-dev libsdl2-dev
//Compile on Ubuntu:
g++ -g -O0 -Wall -o program main.cpp -I/usr/include/SDL2 -I /usr/include/GL -I /usr/include -I /usr/include/rtaudio -lSDL2 -lSDL2main -lGL -lGLU -lrtaudio
//run the program:
./program
press 1 for saw wave output, and 2 for input to output.
