@homebridge/camera-utils/dist/rtp-splitter.js

Utilities to simplify homebridge camera plugin development

import { createSocket } from 'node:dgram';
import { fromEvent, merge, ReplaySubject } from 'rxjs';
import { map, share, takeUntil } from 'rxjs/operators';
import { bindToPort } from './ports.js';
import { getPayloadType, isRtpMessagePayloadType } from './rtp.js';
export class RtpSplitter {
    socket = createSocket('udp4');
    portPromise = bindToPort(this.socket);
    onClose = new ReplaySubject();
    onMessage = fromEvent(this.socket, 'message').pipe(map(([message, info]) => {
        const payloadType = getPayloadType(message);
        return {
            message,
            info,
            isRtpMessage: isRtpMessagePayloadType(payloadType),
            payloadType,
        };
    }), takeUntil(this.onClose), share());
    constructor(messageHandler) {
        if (messageHandler) {
            this.addMessageHandler(messageHandler);
        }
        merge(fromEvent(this.socket, 'close'), fromEvent(this.socket, 'error'))
            .pipe(takeUntil(this.onClose))
            .subscribe(() => {
            this.cleanUp();
        });
    }
    addMessageHandler(handler) {
        this.onMessage.subscribe((description) => {
            const forwardingTarget = handler(description);
            if (forwardingTarget) {
                this.send(description.message, forwardingTarget);
            }
        });
    }
    async send(message, sendTo) {
        await this.portPromise;
        if (this.closed) {
            // If we send a message on a closed socket, it will throw an ERR_SOCKET_DGRAM_NOT_RUNNING error
            return;
        }
        this.socket.send(message, sendTo.port, sendTo.address || '127.0.0.1');
    }
    cleanedUp = false;
    cleanUp() {
        this.closed = true;
        if (this.cleanedUp) {
            return;
        }
        this.cleanedUp = true;
        this.onClose.next(null);
    }
    closed = false;
    close() {
        if (this.closed) {
            return;
        }
        this.socket.close();
        this.cleanUp();
    }
}
//# sourceMappingURL=rtp-splitter.js.map