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use icy_metadata::{IcyHeaders, IcyMetadataReader, RequestIcyMetadata};
use rodio::{Decoder, OutputStream, Sink};
use std::num::NonZeroUsize;
use stream_download::http::reqwest::Client;
use stream_download::http::HttpStream;
use stream_download::storage::bounded::BoundedStorageProvider;
use stream_download::storage::memory::MemoryStorageProvider;
use stream_download::{Settings, StreamDownload};
const AUDIO_BUFFER_SECONDS: u32 = 5;
pub struct Rodio {}
impl Rodio {
pub async fn play(&self, url: &str) {
let (_stream, handle) = OutputStream::try_default().unwrap();
let sink = Sink::try_new(&handle).unwrap();
// request metadata header
let client = Client::builder().request_icy_metadata().build().unwrap();
let stream = HttpStream::new(client, url.parse().unwrap()).await.unwrap();
let icy_headers = IcyHeaders::parse_from_headers(stream.headers());
// println!("Icecast headers: {icy_headers:#?}\n");
// println!("content type={:?}\n", stream.content_type());
// buffer bitrate (in kilobits) / bits per byte * bytes per kilobyte * N seconds
let prefetch_bytes = icy_headers.bitrate().unwrap() / 8 * 1024 * AUDIO_BUFFER_SECONDS;
let reader = StreamDownload::from_stream(
stream,
// use bounded storage to keep the underlying size from growing indefinitely
BoundedStorageProvider::new(
MemoryStorageProvider,
// be liberal with the buffer size, you need to make sure it holds enough space to
// prevent any out-of-bounds reads
NonZeroUsize::new(512 * 1024).unwrap(),
),
Settings::default().prefetch_bytes(prefetch_bytes as u64),
)
.await
.unwrap();
let metadata_reader = IcyMetadataReader::new(
reader,
// Since we requested icy metadata, the metadata interval header should be present in the
// response. This will allow us to parse the metadata within the stream
icy_headers.metadata_interval(),
|metadata| {
if let Ok(md) = metadata {
if let Some(tr) = md.stream_title() {
println!(" {tr}");
}
}
},
);
sink.append(Decoder::new(metadata_reader).unwrap());
let handle = tokio::task::spawn_blocking(move || {
sink.sleep_until_end();
});
handle.await.unwrap();
}
}
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