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49 lines
1.1 KiB
JavaScript
49 lines
1.1 KiB
JavaScript
const WebSocket = require('ws');
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const fs = require('fs');
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const pcm_file = './16bit-8000.raw';
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let interval = 0,
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sampleRate = 8000,
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channels = 2,
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bytesChunk = (sampleRate * channels),
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offset = 0,
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pcmData,
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wss;
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fs.readFile(pcm_file, (err, data) => {
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if (err) throw err;
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pcmData = data;
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openSocket();
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});
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function openSocket() {
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wss = new WebSocket.Server({ port: 8080 });
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console.log('Server ready...');
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wss.on('connection', function connection(ws) {
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console.log('Socket connected. sending data...');
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if (interval) {
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clearInterval(interval);
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}
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interval = setInterval(function() {
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sendData();
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}, 500);
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});
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}
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function sendData() {
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let payload;
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if (offset >= pcmData.length) {
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clearInterval(interval);
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offset = 0;
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return;
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}
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payload = pcmData.subarray(offset, (offset + bytesChunk));
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offset += bytesChunk;
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wss.clients.forEach(function each(client) {
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if (client.readyState === WebSocket.OPEN) {
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client.send(payload);
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}
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});
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} |