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pub struct Playlist {
data: Vec<Option<AudioRequest>>,
read: usize,
write: usize,
is_full: bool,
}
impl Playlist {
pub fn new() -> Self {
Self {
data: Vec::with_capacity(3),
read: 0,
write: 0,
is_full: false,
}
}
pub fn push(&mut self, req: AudioRequest) -> bool {
if self.is_full {
return false;
}
if self.data.len() < self.data.capacity() {
self.data.push(Some(req));
} else {
self.data[self.write] = Some(req);
}
self.write = (self.write + 1) % self.data.capacity();
if self.write == self.read {
self.is_full = true;
}
true
}
pub fn is_empty(&self) -> bool {
!self.is_full && self.write == self.read
}
pub fn is_full(&self) -> bool {
self.is_full
}
pub fn pop(&mut self) -> Option<AudioRequest> {
if self.is_empty() {
None
} else {
self.is_full = false;
let res = self.data[self.read].take();
self.read += 1;
res
}
}
pub fn clear(&mut self) {
self.data.clear();
self.read = 0;
self.write = 0;
self.is_full = false;
}
}
#[derive(Clone, Debug)]
pub struct AudioRequest {
pub title: String,
pub address: String,
}
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