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ui/src/components/CameraView.tsx
2026-07-05 13:03:26 +03:00

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import mpegts from 'mpegts.js';
import { useEffect, useRef, useState } from 'react';
type CameraViewProps = {
title?: string;
wsUrl: string;
};
export function CameraView({ title = 'Камера', wsUrl }: CameraViewProps) {
const videoRef = useRef<HTMLVideoElement | null>(null);
const [error, setError] = useState<string | null>(null);
useEffect(() => {
const video = videoRef.current;
let player: ReturnType<typeof mpegts.createPlayer> | null = null;
if (!video) {
return;
}
const clearError = () => setError(null);
video.addEventListener('playing', clearError);
setError(null);
if (!mpegts.isSupported()) {
setError('Браузер не поддерживает MPEG-TS поток');
return () => {
video.removeEventListener('playing', clearError);
};
}
player = mpegts.createPlayer(
{ type: 'mpegts', isLive: true, url: wsUrl },
{ liveBufferLatencyChasing: true, liveBufferLatencyMaxLatency: 1.5 },
);
player.attachMediaElement(video);
player.load();
const playResult = player.play();
if (playResult instanceof Promise) {
void playResult.then(() => setError(null)).catch(() => setError('Не удалось запустить воспроизведение'));
}
return () => {
video.removeEventListener('playing', clearError);
player?.pause();
player?.unload();
player?.detachMediaElement();
player?.destroy();
};
}, [wsUrl]);
return (
<article className="camera-view">
<video ref={videoRef} className="camera-view__video" controls autoPlay muted playsInline />
<div className="camera-view__caption">
<strong>{title}</strong>
<span>{wsUrl}</span>
</div>
{error ? <div className="camera-view__error">{error}</div> : null}
</article>
);
}