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feat(input): Support HLS streams (#242)
This patch adds support for yt-dl streams with the protocol m3u8_native which includes sites like Soundcloud. Closes: #241
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,149 @@ | ||
| use std::{ | ||
| io::{ErrorKind as IoErrorKind, Result as IoResult, SeekFrom}, | ||
| pin::Pin, | ||
| task::{Context, Poll}, | ||
| }; | ||
|
|
||
| use async_trait::async_trait; | ||
| use bytes::Bytes; | ||
| use futures::StreamExt; | ||
| use pin_project::pin_project; | ||
| use reqwest::{header::HeaderMap, Client}; | ||
| use stream_lib::Event; | ||
| use symphonia_core::io::MediaSource; | ||
| use tokio::io::{AsyncRead, AsyncSeek, ReadBuf}; | ||
| use tokio_util::io::StreamReader; | ||
|
|
||
| use crate::input::{ | ||
| AsyncAdapterStream, | ||
| AsyncMediaSource, | ||
| AudioStream, | ||
| AudioStreamError, | ||
| Compose, | ||
| Input, | ||
| }; | ||
|
|
||
| /// Lazy HLS stream | ||
| #[derive(Debug)] | ||
| pub struct HlsRequest { | ||
| /// HTTP client | ||
| client: Client, | ||
| /// URL of hls playlist | ||
| request: String, | ||
| /// Headers of the request | ||
| headers: HeaderMap, | ||
| } | ||
|
|
||
| impl HlsRequest { | ||
| #[must_use] | ||
| /// Create a lazy HLS request. | ||
| pub fn new(client: Client, request: String) -> Self { | ||
| Self::new_with_headers(client, request, HeaderMap::default()) | ||
| } | ||
|
|
||
| #[must_use] | ||
| /// Create a lazy HTTP request. | ||
| pub fn new_with_headers(client: Client, request: String, headers: HeaderMap) -> Self { | ||
| HlsRequest { | ||
| client, | ||
| request, | ||
| headers, | ||
| } | ||
| } | ||
|
|
||
| fn create_stream(&mut self) -> Result<HlsStream, AudioStreamError> { | ||
| let request = self | ||
| .client | ||
| .get(&self.request) | ||
| .headers(self.headers.clone()) | ||
| .build() | ||
| .map_err(|why| AudioStreamError::Fail(why.into()))?; | ||
|
|
||
| let hls = stream_lib::download_hls(self.client.clone(), request, None); | ||
|
|
||
| let stream = Box::new(StreamReader::new(hls.map(|ev| match ev { | ||
| Event::Bytes { bytes } => Ok(bytes), | ||
| Event::End => Ok(Bytes::new()), | ||
| Event::Error { error } => Err(std::io::Error::new( | ||
| std::io::ErrorKind::UnexpectedEof, | ||
| error, | ||
| )), | ||
| }))); | ||
|
|
||
| Ok(HlsStream { stream }) | ||
| } | ||
| } | ||
|
|
||
| #[pin_project] | ||
| struct HlsStream { | ||
| #[pin] | ||
| stream: Box<dyn AsyncRead + Send + Sync + Unpin>, | ||
| } | ||
|
|
||
| impl AsyncRead for HlsStream { | ||
| fn poll_read( | ||
| self: Pin<&mut Self>, | ||
| cx: &mut Context<'_>, | ||
| buf: &mut ReadBuf<'_>, | ||
| ) -> Poll<IoResult<()>> { | ||
| AsyncRead::poll_read(self.project().stream, cx, buf) | ||
| } | ||
| } | ||
|
|
||
| impl AsyncSeek for HlsStream { | ||
| fn start_seek(self: Pin<&mut Self>, _position: SeekFrom) -> IoResult<()> { | ||
| Err(IoErrorKind::Unsupported.into()) | ||
| } | ||
|
|
||
| fn poll_complete(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<IoResult<u64>> { | ||
| unreachable!() | ||
| } | ||
| } | ||
|
|
||
| #[async_trait] | ||
| impl AsyncMediaSource for HlsStream { | ||
| fn is_seekable(&self) -> bool { | ||
| false | ||
| } | ||
|
|
||
| async fn byte_len(&self) -> Option<u64> { | ||
| None | ||
| } | ||
|
|
||
| async fn try_resume( | ||
| &mut self, | ||
| _offset: u64, | ||
| ) -> Result<Box<dyn AsyncMediaSource>, AudioStreamError> { | ||
| Err(AudioStreamError::Unsupported) | ||
| } | ||
| } | ||
|
|
||
| #[async_trait] | ||
| impl Compose for HlsRequest { | ||
| fn create(&mut self) -> Result<AudioStream<Box<dyn MediaSource>>, AudioStreamError> { | ||
| self.create_stream().map(|input| { | ||
| let stream = AsyncAdapterStream::new(Box::new(input), 64 * 1024); | ||
|
|
||
| AudioStream { | ||
| input: Box::new(stream) as Box<dyn MediaSource>, | ||
| hint: None, | ||
| } | ||
| }) | ||
| } | ||
|
|
||
| async fn create_async( | ||
| &mut self, | ||
| ) -> Result<AudioStream<Box<dyn MediaSource>>, AudioStreamError> { | ||
| Err(AudioStreamError::Unsupported) | ||
| } | ||
|
|
||
| fn should_create_async(&self) -> bool { | ||
| false | ||
| } | ||
| } | ||
|
|
||
| impl From<HlsRequest> for Input { | ||
| fn from(val: HlsRequest) -> Self { | ||
| Input::Lazy(Box::new(val)) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,6 @@ | ||
| mod file; | ||
| mod hls; | ||
| mod http; | ||
| mod ytdl; | ||
|
|
||
| pub use self::{file::*, http::*, ytdl::*}; | ||
| pub use self::{file::*, hls::*, http::*, ytdl::*}; |
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