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Limit new context tracks added to frame

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Keep only a fixed history of previous tracks to prior pushing new tracks
This commit is contained in:
ashthespy 2019-03-16 16:18:38 +01:00
parent b0ee8ec74d
commit 6870c76a43
1 changed files with 23 additions and 7 deletions
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30
connect/src/spirc.rs
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@ -57,6 +57,9 @@ pub enum SpircCommand {
Shutdown,
}
const CONTEXT_TRACKS_HISTORY: usize = 10;
const CONTEXT_FETCH_THRESHOLD: u32 = 5;
pub struct Spirc {
commands: mpsc::UnboundedSender<SpircCommand>,
}
@ -655,11 +658,11 @@ impl SpircTask {
new_index,
self.state.get_track().len(),
self.state.get_context_uri(),
self.state.get_track().len() as u32 - new_index < 5
self.state.get_track().len() as u32 - new_index < CONTEXT_FETCH_THRESHOLD
);
let context_uri = self.state.get_context_uri().to_owned();
if (context_uri.starts_with("spotify:station:") || context_uri.starts_with("spotify:dailymix:"))
&& ((self.state.get_track().len() as u32) - new_index) < 5
&& ((self.state.get_track().len() as u32) - new_index) < CONTEXT_FETCH_THRESHOLD
{
self.context_fut = self.resolve_station(&context_uri);
self.update_tracks_from_context();
@ -768,12 +771,25 @@ impl SpircTask {
let new_tracks = &context.tracks;
debug!("Adding {:?} tracks from context to playlist", new_tracks.len());
// Can we just push the new tracks and forget it?
let tracks = self.state.mut_track();
// tracks.append(new_tracks.to_owned());
for t in new_tracks {
tracks.push(t.to_owned());
let current_index = self.state.get_playing_track_index();
let mut new_index = 0;
{
let mut tracks = self.state.mut_track();
// Does this need to be optimised - we don't need to actually traverse the len of tracks
let tracks_len = tracks.len();
if tracks_len > CONTEXT_TRACKS_HISTORY {
tracks.rotate_right(tracks_len - CONTEXT_TRACKS_HISTORY);
tracks.truncate(CONTEXT_TRACKS_HISTORY);
}
// tracks.extend_from_slice(&mut new_tracks); // method doesn't exist for protobuf::RepeatedField
for t in new_tracks {
tracks.push(t.to_owned());
}
if current_index > CONTEXT_TRACKS_HISTORY as u32 {
new_index = current_index - CONTEXT_TRACKS_HISTORY as u32;
}
}
self.state.set_playing_track_index(new_index);
}
}