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//! Audio site abstraction for placement-routed host streams.
use std::sync::Arc;
use sim_kernel::Result;
use crate::placement::{AudioDeviceCard, AudioSiteKey};
use crate::{HostBackend, HostOpenStream, HostStreamConfigRequest};
/// Runtime-openable audio placement target.
///
/// An audio site owns stable descriptive metadata and delegates stream opening
/// to the backend implementation selected for that site.
pub trait AudioSite: Send + Sync {
/// Returns the stable key used to register and route this site.
fn key(&self) -> &AudioSiteKey;
/// Returns the browseable device card for this site.
fn card(&self) -> &AudioDeviceCard;
/// Opens a host stream for this site using the supplied stream request.
fn open(&self, request: HostStreamConfigRequest) -> Result<HostOpenStream>;
}
/// Modeled audio site backed by an existing host backend.
pub struct ModeledAudioSite {
card: AudioDeviceCard,
backend: Arc<dyn HostBackend>,
}
impl ModeledAudioSite {
/// Builds a modeled site from a device card and host backend.
pub fn new(card: AudioDeviceCard, backend: Arc<dyn HostBackend>) -> Self {
Self { card, backend }
}
}
impl AudioSite for ModeledAudioSite {
fn key(&self) -> &AudioSiteKey {
&self.card.key
}
fn card(&self) -> &AudioDeviceCard {
&self.card
}
fn open(&self, request: HostStreamConfigRequest) -> Result<HostOpenStream> {
self.backend.open(request)
}
}