Yep. The stb_image.h API is very simple. Also, because its just an #include, you don't need to worry about your users needing to figure out how to link a library.
This turns an image into a PCM audio file. The image is visible on the spectrogram. For example, here's Ernest Hemmingway punting a beer can: http://imgur.com/QR5a8mw
https://en.wikipedia.org/wiki/AV1