use crate::data_structures::AppData;
use crate::producer::{Producer, ProducerId};
use crate::router::Router;
use crate::uuid_based_wrapper_type;
use crate::worker::RequestError;
use async_trait::async_trait;
use event_listener_primitives::HandlerId;
uuid_based_wrapper_type!(
/// [`RtpObserver`] identifier.
RtpObserverId
);
/// Options for adding producer to `[RtpObserver`]
#[derive(Debug, Clone)]
#[non_exhaustive]
pub struct RtpObserverAddProducerOptions {
/// The id of the Producer to be added.
pub producer_id: ProducerId,
}
impl RtpObserverAddProducerOptions {
/// * `producer_id` - The id of the [`Producer`] to be added.
#[must_use]
pub fn new(producer_id: ProducerId) -> Self {
Self { producer_id }
}
}
/// An RTP observer inspects the media received by a set of selected producers.
///
/// mediasoup implements the following RTP observers:
/// * [`AudioLevelObserver`](crate::audio_level_observer::AudioLevelObserver)
/// * [`ActiveSpeakerObserver`](crate::active_speaker_observer::ActiveSpeakerObserver)
#[async_trait]
pub trait RtpObserver {
/// RtpObserver id.
#[must_use]
fn id(&self) -> RtpObserverId;
/// Router to which RTP observer belongs.
fn router(&self) -> &Router;
/// Whether the RtpObserver is paused.
#[must_use]
fn paused(&self) -> bool;
/// Custom application data.
#[must_use]
fn app_data(&self) -> &AppData;
/// Whether the RTP observer is closed.
#[must_use]
fn closed(&self) -> bool;
/// Pauses the RTP observer. No RTP is inspected until resume() is called.
async fn pause(&self) -> Result<(), RequestError>;
/// Resumes the RTP observer. RTP is inspected again.
async fn resume(&self) -> Result<(), RequestError>;
/// Provides the RTP observer with a new producer to monitor.
async fn add_producer(
&self,
rtp_observer_add_producer_options: RtpObserverAddProducerOptions,
) -> Result<(), RequestError>;
/// Removes the given producer from the RTP observer.
async fn remove_producer(&self, producer_id: ProducerId) -> Result<(), RequestError>;
/// Callback is called when the RTP observer is paused.
fn on_pause(&self, callback: Box<dyn Fn() + Send + Sync + 'static>) -> HandlerId;
/// Callback is called when the RTP observer is resumed.
fn on_resume(&self, callback: Box<dyn Fn() + Send + Sync + 'static>) -> HandlerId;
/// Callback is called when a new producer is added into the RTP observer.
fn on_add_producer(
&self,
callback: Box<dyn Fn(&Producer) + Send + Sync + 'static>,
) -> HandlerId;
/// Callback is called when a producer is removed from the RTP observer.
fn on_remove_producer(
&self,
callback: Box<dyn Fn(&Producer) + Send + Sync + 'static>,
) -> HandlerId;
/// Callback is called when the router this RTP observer belongs to is closed for whatever reason. The RTP
/// observer itself is also closed.
fn on_router_close(&self, callback: Box<dyn FnOnce() + Send + 'static>) -> HandlerId;
/// Callback is called when the RTP observer is closed for whatever reason.
///
/// NOTE: Callback will be called in place if observer is already closed.
fn on_close(&self, callback: Box<dyn FnOnce() + Send + 'static>) -> HandlerId;
}