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Fix panic when retrying a track that already failed

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Roderick van Domburg 2022-01-13 21:05:17 +01:00
parent ab67370dc8
commit e627cb4b35
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GPG key ID: A9EF5222A26F0451
1 changed files with 34 additions and 27 deletions
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61
playback/src/player.rs
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@ -14,7 +14,10 @@ use std::{
};
use byteorder::{LittleEndian, ReadBytesExt};
use futures_util::{future, stream::futures_unordered::FuturesUnordered, StreamExt, TryFutureExt};
use futures_util::{
future, future::FusedFuture, stream::futures_unordered::FuturesUnordered, StreamExt,
TryFutureExt,
};
use parking_lot::Mutex;
use symphonia::core::io::MediaSource;
use tokio::sync::{mpsc, oneshot};
@ -499,7 +502,7 @@ enum PlayerPreload {
None,
Loading {
track_id: SpotifyId,
loader: Pin<Box<dyn Future<Output = Result<PlayerLoadedTrackData, ()>> + Send>>,
loader: Pin<Box<dyn FusedFuture<Output = Result<PlayerLoadedTrackData, ()>> + Send>>,
},
Ready {
track_id: SpotifyId,
@ -515,7 +518,7 @@ enum PlayerState {
track_id: SpotifyId,
play_request_id: u64,
start_playback: bool,
loader: Pin<Box<dyn Future<Output = Result<PlayerLoadedTrackData, ()>> + Send>>,
loader: Pin<Box<dyn FusedFuture<Output = Result<PlayerLoadedTrackData, ()>> + Send>>,
},
Paused {
track_id: SpotifyId,
@ -571,6 +574,7 @@ impl PlayerState {
matches!(self, Stopped)
}
#[allow(dead_code)]
fn is_loading(&self) -> bool {
use self::PlayerState::*;
matches!(self, Loading { .. })
@ -1026,31 +1030,34 @@ impl Future for PlayerInternal {
play_request_id,
} = self.state
{
match loader.as_mut().poll(cx) {
Poll::Ready(Ok(loaded_track)) => {
self.start_playback(
track_id,
play_request_id,
loaded_track,
start_playback,
);
if let PlayerState::Loading { .. } = self.state {
error!("The state wasn't changed by start_playback()");
exit(1);
// The loader may be terminated if we are trying to load the same track
// as before, and that track failed to open before.
if !loader.as_mut().is_terminated() {
match loader.as_mut().poll(cx) {
Poll::Ready(Ok(loaded_track)) => {
self.start_playback(
track_id,
play_request_id,
loaded_track,
start_playback,
);
if let PlayerState::Loading { .. } = self.state {
error!("The state wasn't changed by start_playback()");
exit(1);
}
}
Poll::Ready(Err(e)) => {
error!(
"Skipping to next track, unable to load track <{:?}>: {:?}",
track_id, e
);
self.send_event(PlayerEvent::Unavailable {
track_id,
play_request_id,
})
}
Poll::Pending => (),
}
Poll::Ready(Err(e)) => {
error!(
"Skipping to next track, unable to load track <{:?}>: {:?}",
track_id, e
);
debug_assert!(self.state.is_loading());
self.send_event(PlayerEvent::Unavailable {
track_id,
play_request_id,
})
}
Poll::Pending => (),
}
}
@ -2000,7 +2007,7 @@ impl PlayerInternal {
&mut self,
spotify_id: SpotifyId,
position_ms: u32,
) -> impl Future<Output = Result<PlayerLoadedTrackData, ()>> + Send + 'static {
) -> impl FusedFuture<Output = Result<PlayerLoadedTrackData, ()>> + Send + 'static {
// This method creates a future that returns the loaded stream and associated info.
// Ideally all work should be done using asynchronous code. However, seek() on the
// audio stream is implemented in a blocking fashion. Thus, we can't turn it into future