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File size: 3,054 Bytes
1295969 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 | import React, { useEffect, useRef } from 'react';
interface FrequencyVisualizerProps {
isPlaying: boolean;
audioUrl?: string;
}
const FrequencyVisualizer: React.FC<FrequencyVisualizerProps> = ({ isPlaying, audioUrl }) => {
const canvasRef = useRef<HTMLCanvasElement>(null);
const audioContextRef = useRef<AudioContext | null>(null);
const analyzerRef = useRef<AnalyserNode | null>(null);
const requestRef = useRef<number>();
useEffect(() => {
if (!isPlaying) {
if (requestRef.current) cancelAnimationFrame(requestRef.current);
return;
}
const initAudio = async () => {
if (!audioContextRef.current) {
const AudioCtx = window.AudioContext || (window as Window & { webkitAudioContext?: typeof AudioContext }).webkitAudioContext;
audioContextRef.current = new AudioCtx();
analyzerRef.current = audioContextRef.current.createAnalyser();
analyzerRef.current.fftSize = 256;
}
const draw = () => {
if (!canvasRef.current || !analyzerRef.current) return;
const canvas = canvasRef.current;
const ctx = canvas.getContext('2d');
if (!ctx) return;
const bufferLength = analyzerRef.current.frequencyBinCount;
const dataArray = new Uint8Array(bufferLength);
analyzerRef.current.getByteFrequencyData(dataArray);
ctx.clearRect(0, 0, canvas.width, canvas.height);
const barWidth = (canvas.width / bufferLength) * 2.5;
let barHeight;
let x = 0;
for (let i = 0; i < bufferLength; i++) {
barHeight = (dataArray[i] / 255) * canvas.height;
// Gradient for "Monster WAV" feel
const gradient = ctx.createLinearGradient(0, canvas.height, 0, 0);
gradient.addColorStop(0, '#7c3aed'); // Primary violet
gradient.addColorStop(1, '#a78bfa'); // Lighter violet
ctx.fillStyle = gradient;
ctx.fillRect(x, canvas.height - barHeight, barWidth, barHeight);
x += barWidth + 1;
}
requestRef.current = requestAnimationFrame(draw);
};
draw();
};
initAudio();
return () => {
if (requestRef.current) cancelAnimationFrame(requestRef.current);
};
}, [isPlaying]);
return (
<div className="w-full h-32 bg-zinc-950/50 rounded-lg overflow-hidden border border-zinc-800/50 flex flex-col">
<div className="px-3 py-1 flex justify-between items-center border-b border-zinc-800/50 bg-zinc-900/30">
<span className="text-[10px] font-mono text-primary uppercase tracking-widest font-bold">Monster WAV Monitor</span>
<div className="flex gap-1">
<div className={`w-1 h-1 rounded-full ${isPlaying ? 'bg-green-500 animate-pulse' : 'bg-zinc-700'}`} />
<div className="w-1 h-1 rounded-full bg-zinc-700" />
</div>
</div>
<canvas
ref={canvasRef}
className="w-full flex-1"
width={400}
height={100}
/>
</div>
);
};
export default FrequencyVisualizer;
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