use symphonia::core::codecs::DecoderOptions;
use symphonia::core::formats::FormatOptions;
use symphonia::core::io::MediaSourceStream;
use symphonia::core::meta::MetadataOptions;
use symphonia::core::probe::Hint;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Open the media source
    let file = std::fs::File::open("audio.mp3")?;
    let mss = MediaSourceStream::new(Box::new(file), Default::default());

    // Create a hint to help the format registry
    let mut hint = Hint::new();
    hint.with_extension("mp3");

    // Probe the media source
    let probed = symphonia::default::get_probe()
        .format(&hint, mss, &FormatOptions::default(), &MetadataOptions::default())?;

    // Get the format reader
    let mut format = probed.format;

    // Find the first audio track
    let track = format
        .tracks()
        .iter()
        .find(|t| t.codec_params.codec != symphonia::core::codecs::CODEC_TYPE_NULL)
        .ok_or("no audio track found")?;

    // Create a decoder
    let mut decoder = symphonia::default::get_codecs()
        .make(&track.codec_params, &DecoderOptions::default())?;

    // Decode loop
    loop {
        let packet = match format.next_packet() {
            Ok(packet) => packet,
            Err(_) => break,
        };

        if packet.track_id() != track.id {
            continue;
        }

        let decoded = decoder.decode(&packet)?;
        // Process decoded audio samples...
    }

    Ok(())
}