Rust library: audio-visualizer

So far this library is really simple and mainly targets developers that develop audio algorithms. With this library you can easily display your current audio data/waveform and check if everything looks good. So far it only supports a static visualization with export as PNG file. Code contributions are very welcome!

Example code

```rust use minimp3::{Decoder as Mp3Decoder, Frame as Mp3Frame, Error as Mp3Error}; use audiovisualizer::ChannelInterleavement; use audiovisualizer::Channels; use audiovisualizer::waveform::staticc::pngfile::visualize; use std::path::PathBuf; use std::fs::File;

fn main() { let mut path = PathBuf::new(); path.push("src/test/samples"); path.push("sample_1.mp3"); let mut decoder = Mp3Decoder::new(File::open(path).unwrap());

let mut lrlr_mp3_samples = vec![];
loop {
    match decoder.next_frame() {
        Ok(Mp3Frame { data: samples_of_frame, .. }) => {
            for sample in samples_of_frame {
                lrlr_mp3_samples.push(sample);
            }
        }
        Err(Mp3Error::Eof) => break,
        Err(e) => panic!("{:?}", e),
    }
}

visualize(
    &lrlr_mp3_samples,
    Channels::Stereo(ChannelInterleavement::LRLR),
    "src/test/out",
    "sample_1_waveform.png"
);

} ```