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feat: Implement an Electron-based broadcasting client with screen/window and audio source selection, including Pipewire integration, and add auto-unmute to the viewer.

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This commit is contained in:
Kibi Kelburton
2026-02-23 04:06:02 +01:00
parent 95208cfab6
commit 56e59a5e2b
11 changed files with 1710 additions and 0 deletions
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1
.gitignore vendored
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node_modules/ node_modules/
client/config.json

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client/index.html Normal file
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Screenshare Broadcaster</title>
<link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap" rel="stylesheet">
<style>
:root {
--bg-color: #0f172a;
--text-primary: #f8fafc;
--text-secondary: #94a3b8;
--accent-color: #3b82f6;
--glass-bg: rgba(30, 41, 59, 0.7);
--glass-border: rgba(255, 255, 255, 0.1);
}
body {
font-family: 'Inter', sans-serif;
background-color: var(--bg-color);
color: var(--text-primary);
margin: 0;
padding: 2rem;
display: flex;
flex-direction: column;
align-items: center;
}
h1 { margin-top: 0; }
.controls {
background: var(--glass-bg);
border: 1px solid var(--glass-border);
border-radius: 12px;
padding: 2rem;
width: 100%;
max-width: 600px;
text-align: center;
margin-bottom: 2rem;
}
input, button, select {
font-family: inherit;
padding: 0.8rem 1rem;
border-radius: 8px;
border: 1px solid var(--glass-border);
margin-bottom: 1rem;
width: 90%;
font-size: 1rem;
}
input, select {
background: rgba(0,0,0,0.2);
color: white;
outline: none;
}
button {
background: var(--accent-color);
color: white;
font-weight: 600;
cursor: pointer;
border: none;
transition: all 0.2s;
}
button:hover { background: #2563eb; transform: translateY(-2px); }
button:disabled { background: #475569; cursor: not-allowed; transform: none; }
video {
width: 100%;
max-width: 800px;
border-radius: 12px;
background: #000;
display: none;
}
.status { color: var(--text-secondary); margin-bottom: 1rem; }
.label {
display: block;
text-align: left;
width: 90%;
margin: 0 auto 0.5rem auto;
color: var(--text-secondary);
font-size: 0.9rem;
}
/* Source Grid */
.sources-grid {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
gap: 15px;
width: 90%;
max-height: 250px;
overflow-y: auto;
margin: 0 auto 1.5rem auto;
padding: 10px;
background: rgba(0,0,0,0.2);
border-radius: 8px;
border: 1px solid var(--glass-border);
}
.source-item {
cursor: pointer;
border-radius: 6px;
padding: 8px;
background: rgba(255,255,255,0.05);
transition: all 0.2s ease;
text-align: center;
border: 2px solid transparent;
}
.source-item:hover {
background: rgba(255,255,255,0.1);
}
.source-item.selected {
background: rgba(59, 130, 246, 0.2);
border-color: var(--accent-color);
}
.source-item img {
width: 100%;
border-radius: 4px;
margin-bottom: 8px;
object-fit: cover;
aspect-ratio: 16/9;
}
.source-item span {
display: block;
font-size: 0.85rem;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
/* Stats Panel */
.stats-panel {
background: rgba(0,0,0,0.4);
border-radius: 8px;
padding: 1rem;
width: 90%;
margin: 1rem auto;
text-align: left;
display: none;
font-family: monospace;
font-size: 1.1rem;
color: #10b981; /* green text */
}
</style>
</head>
<body>
<h1>Broadcaster Client</h1>
<div class="controls" id="controlsPanel">
<label class="label">Server Connection</label>
<input type="text" id="serverUrl" placeholder="Server URL (e.g. http://localhost:3000)" value="http://localhost:3000">
<input type="password" id="serverPassword" placeholder="Stream Password">
<div style="display:flex; justify-content:space-between; align-items:center; width: 90%; margin: 10px auto;">
<h3 style="margin:0;">Media Sources</h3>
<button id="getSourcesBtn" style="width:auto; margin:0; padding: 0.4rem 0.8rem;">Refresh Devices</button>
</div>
<label class="label">Visual Source (Screen/Window)</label>
<div id="sourcesGrid" class="sources-grid"></div>
<label class="label">Audio Source (Microphone/Pipewire Virtual Sinks)</label>
<select id="audioSelect"></select>
<button id="startBtn" disabled style="margin-top: 1.5rem;">Start Broadcast</button>
<div class="status" id="statusText">Not Broadcasting</div>
<button id="stopBtn" style="display:none; background:#ef4444;">Stop Broadcast</button>
<div class="stats-panel" id="statsPanel">
<div><strong>Resolution:</strong> <span id="statsRes">0x0</span></div>
<div><strong>FPS:</strong> <span id="statsFps">0</span></div>
<div><strong>Upstream:</strong> <span id="statsBitrate">0 kbps</span></div>
</div>
</div>
<video id="localVideo" autoplay playsinline muted></video>
<!-- Use socket.io client script locally installed via npm -->
<script src="./node_modules/socket.io-client/dist/socket.io.js"></script>
<script src="renderer.js"></script>
</body>
</html>

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client/main.js Normal file
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const { app, BrowserWindow, desktopCapturer, ipcMain } = require('electron');
const path = require('path');
const PipewireHelper = require('./pipewire');
// Ensure Chromium tries to use PipeWire for screen sharing on Linux
app.commandLine.appendSwitch('enable-features', 'WebRTCPipeWireCapturer');
function createWindow() {
const win = new BrowserWindow({
width: 1000,
height: 800,
webPreferences: {
preload: path.join(__dirname, 'preload.js'),
nodeIntegration: false,
contextIsolation: true,
}
});
win.loadFile('index.html');
}
app.whenReady().then(async () => {
// Setup the virtual microphone as soon as the app starts
await PipewireHelper.createVirtualMic();
createWindow();
app.on('activate', () => {
if (BrowserWindow.getAllWindows().length === 0) {
createWindow();
}
});
});
app.on('will-quit', async () => {
await PipewireHelper.destroyVirtualMic();
});
app.on('window-all-closed', () => {
if (process.platform !== 'darwin') {
app.quit();
}
});
// Handle IPC request from renderer to get screen/audio sources
ipcMain.handle('get-sources', async () => {
const inputSources = await desktopCapturer.getSources({
types: ['window', 'screen'],
fetchWindowIcons: true
});
return inputSources.map(source => ({
id: source.id,
name: source.name,
thumbnail: source.thumbnail.toDataURL()
}));
});
// Handle Pipewire specific audio isolation requests
ipcMain.handle('get-audio-apps', async () => {
return await PipewireHelper.getAudioApplications();
});
ipcMain.handle('link-app-audio', async (event, appName) => {
return await PipewireHelper.linkApplicationToMic(appName);
});
// Handle saving and loading the config.json profile
const fs = require('fs');
const configPath = path.join(__dirname, 'config.json');
ipcMain.handle('get-config', () => {
try {
if (fs.existsSync(configPath)) {
return JSON.parse(fs.readFileSync(configPath, 'utf8'));
}
} catch (e) { console.error("Could not read config", e); }
return { serverUrl: 'http://localhost:3000', serverPassword: '' };
});
ipcMain.handle('save-config', (event, newConfig) => {
fs.writeFileSync(configPath, JSON.stringify(newConfig, null, 2), 'utf8');
});

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client/package-lock.json generated Normal file
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"socket.io-client": "^4.8.3"
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"license": "MIT",
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17
client/package.json Normal file
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{
"name": "client",
"version": "1.0.0",
"description": "",
"main": "main.js",
"scripts": {
"start": "electron ."
},
"keywords": [],
"author": "",
"license": "ISC",
"type": "commonjs",
"dependencies": {
"electron": "^40.6.0",
"socket.io-client": "^4.8.3"
}
}

148
client/pipewire.js Normal file
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const { exec } = require('child_process');
const util = require('util');
const execAsync = util.promisify(exec);
const VIRT_MIC_NAME = 'simplescreenshare-audio';
// Pipewire helper class to isolate application audio
class PipewireHelper {
// Create a virtual microphone (a null-audio-sink) that Electron can listen to
static async createVirtualMic() {
try {
await execAsync(`pw-cli destroy ${VIRT_MIC_NAME}`).catch(() => {}); // Cleanup old
const cmd = `pw-cli create-node adapter '{ factory.name=support.null-audio-sink node.name=${VIRT_MIC_NAME} node.description="SimpleScreenshare Audio" media.class=Audio/Source/Virtual object.linger=1 audio.position=[FL,FR] }'`;
const { stdout } = await execAsync(cmd);
console.log("Created virtual mic:", stdout.trim());
// Wait a moment for Pipewire to register it
await new Promise(resolve => setTimeout(resolve, 500));
return true;
} catch (error) {
console.error("Failed to create virtual mic:", error);
return false;
}
}
// Destroy the virtual microphone
static async destroyVirtualMic() {
try {
// Find node ID
const { stdout } = await execAsync(`pw-cli dump short Node`);
const lines = stdout.split('\\n');
for (const line of lines) {
if (line.includes(VIRT_MIC_NAME)) {
const id = line.split(',')[0].trim();
await execAsync(`pw-cli destroy ${id}`);
console.log(`Destroyed virtual mic (ID: ${id})`);
}
}
} catch (error) {
console.error("Failed to destroy virtual mic:", error);
}
}
// Get all running applications currently playing audio
static async getAudioApplications() {
try {
// pw-dump outputs the entire graph as JSON, increase buffer!
const { stdout } = await execAsync('pw-dump', { maxBuffer: 1024 * 1024 * 50 });
const dump = JSON.parse(stdout);
// Filter out audio output streams (applications playing sound)
const apps = dump.filter(node =>
node.info &&
node.info.props &&
node.info.props['media.class'] === 'Stream/Output/Audio' &&
node.info.props['application.name']
).map(node => ({
id: node.id,
name: node.info.props['application.name'],
mediaName: node.info.props['media.name'] || 'Unknown Stream'
}));
// Deduplicate by application name and return
const uniqueApps = [];
const seen = new Set();
for (const app of apps) {
if (!seen.has(app.name)) {
seen.add(app.name);
uniqueApps.push(app);
}
}
return uniqueApps;
} catch (error) {
console.error("Failed to get audio applications:", error);
return [];
}
}
// Link a target application's output to our Virtual Microphone
static async linkApplicationToMic(targetAppName) {
try {
// 1. Get the dump with massive buffer
const { stdout: dumpOut } = await execAsync('pw-dump', { maxBuffer: 1024 * 1024 * 50 });
const dump = JSON.parse(dumpOut);
// 2. Find the target application node
const targetNode = dump.find(node =>
node.info &&
node.info.props &&
node.info.props['media.class'] === 'Stream/Output/Audio' &&
node.info.props['application.name'] === targetAppName
);
// 3. Find our virtual mic node
const micNode = dump.find(node =>
node.info &&
node.info.props &&
node.info.props['node.name'] === VIRT_MIC_NAME
);
if (!targetNode || !micNode) {
console.error("Could not find target node or virtual mic node");
return false;
}
console.log(`Linking ${targetAppName} (ID: ${targetNode.id}) to ${VIRT_MIC_NAME} (ID: ${micNode.id})`);
// 4. Find the Ports for both nodes
const ports = dump.filter(n => n.type === 'PipeWire:Interface:Port');
// Target App Output Ports
const targetPorts = ports.filter(p => p.info.props['node.id'] === targetNode.id && p.info.direction === 'output');
const targetFL = targetPorts.find(p => p.info.props['audio.channel'] === 'FL');
const targetFR = targetPorts.find(p => p.info.props['audio.channel'] === 'FR');
// Virtual Mic Input Ports
const micPorts = ports.filter(p => p.info.props['node.id'] === micNode.id && p.info.direction === 'input');
const micFL = micPorts.find(p => p.info.props['audio.channel'] === 'FL');
const micFR = micPorts.find(p => p.info.props['audio.channel'] === 'FR');
if (!targetFL || !targetFR || !micFL || !micFR) {
console.error("Could not find stereo ports for linking");
return false;
}
// 5. Link them using port aliases!
const targetFlAlias = targetFL.info.props['port.alias'] || targetFL.info.props['object.path'] || targetFL.id;
const targetFrAlias = targetFR.info.props['port.alias'] || targetFR.info.props['object.path'] || targetFR.id;
const micFlAlias = micFL.info.props['port.alias'] || micFL.info.props['object.path'] || micFL.id;
const micFrAlias = micFR.info.props['port.alias'] || micFR.info.props['object.path'] || micFR.id;
await execAsync(`pw-link "${targetFlAlias}" "${micFlAlias}"`).catch(e => console.log("pw-link output:", e.message));
await execAsync(`pw-link "${targetFrAlias}" "${micFrAlias}"`).catch(e => console.log("pw-link output:", e.message));
console.log("Successfully linked audio.");
return true;
} catch (error) {
console.error("Failed to link application:", error);
return false;
}
}
}
module.exports = PipewireHelper;

9
client/preload.js Normal file
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@@ -0,0 +1,9 @@
const { contextBridge, ipcRenderer } = require('electron');
contextBridge.exposeInMainWorld('electronAPI', {
getSources: () => ipcRenderer.invoke('get-sources'),
getAudioApps: () => ipcRenderer.invoke('get-audio-apps'),
linkAppAudio: (appName) => ipcRenderer.invoke('link-app-audio', appName),
getConfig: () => ipcRenderer.invoke('get-config'),
saveConfig: (config) => ipcRenderer.invoke('save-config', config)
});

368
client/renderer.js Normal file
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const serverUrlInput = document.getElementById('serverUrl');
const serverPasswordInput = document.getElementById('serverPassword');
const sourcesGrid = document.getElementById('sourcesGrid');
const audioSelect = document.getElementById('audioSelect');
const getSourcesBtn = document.getElementById('getSourcesBtn');
const startBtn = document.getElementById('startBtn');
const stopBtn = document.getElementById('stopBtn');
const localVideo = document.getElementById('localVideo');
const statusText = document.getElementById('statusText');
const statsPanel = document.getElementById('statsPanel');
let socket;
let peerConnections = {};
let activeStream;
let selectedVideoSourceId = null;
const config = {
iceServers: [
{ urls: "stun:localhost:3478" },
{ urls: "turn:localhost:3478", username: "myuser", credential: "mypassword" }
]
};
// 1. Get Desktop Sources from Main Process and populate raw select tags
// Also enumerate native audio devices from navigator!
getSourcesBtn.addEventListener('click', async () => {
sourcesGrid.innerHTML = '<div style="color:var(--text-secondary); width:100%;">Loading sources...</div>';
audioSelect.innerHTML = '<option value="">Loading audio devices...</option>';
startBtn.disabled = true;
selectedVideoSourceId = null;
try {
// --- Fetch Virtual Video Sources ---
const sources = await window.electronAPI.getSources();
sourcesGrid.innerHTML = '';
sources.forEach(source => {
const item = document.createElement('div');
item.className = 'source-item';
const img = document.createElement('img');
img.src = source.thumbnail;
const label = document.createElement('span');
label.innerText = source.name;
label.title = source.name;
item.appendChild(img);
item.appendChild(label);
item.addEventListener('click', () => {
document.querySelectorAll('.source-item').forEach(i => i.classList.remove('selected'));
item.classList.add('selected');
selectedVideoSourceId = source.id;
startPreview(source.id);
startBtn.disabled = false;
});
sourcesGrid.appendChild(item);
});
// --- Fetch Application Audio Sources via built Pipewire Helper ---
const audioApps = await window.electronAPI.getAudioApps();
audioSelect.innerHTML = '<option value="none">No Audio (Video Only)</option>';
audioApps.forEach(app => {
const option = document.createElement('option');
// We pass the actual application name into the value so the main process can find it via pw-dump
option.value = app.name;
option.text = `${app.name} (${app.mediaName})`;
audioSelect.appendChild(option);
});
// If we don't disable start button here, it would be enabled before user clicked a grid item
startBtn.disabled = true;
} catch (e) {
console.error(e);
sourcesGrid.innerHTML = '<div style="color:red; width:100%;">Error loading sources</div>';
audioSelect.innerHTML = '<option value="none">Error loading audio</option>';
}
});
// --- Preview Stream Logic ---
let previewStream = null;
async function startPreview(videoSourceId) {
// Cleanup previous preview
if (previewStream) {
previewStream.getTracks().forEach(t => t.stop());
previewStream = null;
}
if (!videoSourceId) {
localVideo.style.display = 'none';
return;
}
try {
previewStream = await navigator.mediaDevices.getUserMedia({
audio: false,
video: {
mandatory: {
chromeMediaSource: 'desktop',
chromeMediaSourceId: videoSourceId,
}
}
});
// Removed 1080p ideal limit to prevent Chromium from green-padding non-16:9 window captures!
const videoTrack = previewStream.getVideoTracks()[0];
await videoTrack.applyConstraints({ frameRate: { ideal: 60 } });
localVideo.srcObject = previewStream;
localVideo.style.display = 'block';
} catch (e) {
console.error("Failed to start preview stream:", e);
}
}
// 2. Start Broadcast
startBtn.addEventListener('click', async () => {
const url = serverUrlInput.value;
const password = serverPasswordInput.value;
const videoSourceId = selectedVideoSourceId;
const targetAppName = audioSelect.value;
if (!videoSourceId || !url || !password) {
alert("Please fill out URL, Password, and select a visual source.");
return;
}
// Save credentials for next time
window.electronAPI.saveConfig({ serverUrl: url, serverPassword: password });
try {
// Stop the preview grab so we can grab the real stream cleanly
if (previewStream) {
previewStream.getTracks().forEach(t => t.stop());
previewStream = null;
}
const stream = await navigator.mediaDevices.getUserMedia({
audio: false,
video: {
mandatory: {
chromeMediaSource: 'desktop',
chromeMediaSourceId: videoSourceId,
}
}
});
const videoTrack = stream.getVideoTracks()[0];
await videoTrack.applyConstraints({ frameRate: { ideal: 60 } });
// If user selected an application, grab the Virtual Mic input and link the app to it!
if (targetAppName && targetAppName !== 'none') {
const linked = await window.electronAPI.linkAppAudio(targetAppName);
if (linked) {
// Now that the pipewire graph is linked, we just need to read from our Virtual Mic sink!
// Chromium registers this as a standard Input device
const devices = await navigator.mediaDevices.enumerateDevices();
const virtMic = devices.find(d => d.kind === 'audioinput' && d.label.toLowerCase().includes('simplescreenshare'));
if (virtMic) {
const audioStream = await navigator.mediaDevices.getUserMedia({
audio: {
deviceId: { exact: virtMic.deviceId },
echoCancellation: false,
autoGainControl: false,
noiseSuppression: false,
googAutoGainControl: false,
googEchoCancellation: false,
googNoiseSuppression: false,
googHighpassFilter: false,
channelCount: 2,
sampleRate: 48000
},
video: false
});
stream.addTrack(audioStream.getAudioTracks()[0]);
} else {
console.warn("Virtual mic device not found in navigator enumeration");
}
} else {
alert("Failed to link application audio. Broadcasting video only.");
}
}
activeStream = stream;
localVideo.srcObject = stream;
localVideo.style.display = 'block';
connectAndBroadcast(url, password);
startBtn.style.display = 'none';
stopBtn.style.display = 'inline-block';
statsPanel.style.display = 'block';
statusText.innerText = `Broadcasting to ${url}`;
// Auto stop if user closes the requested window
stream.getVideoTracks()[0].onended = stopSharing;
} catch (e) {
console.error("Stream capture error:", e);
alert("Failed to capture screen. See console for details.");
}
});
function connectAndBroadcast(url, password) {
socket = io(url);
socket.on('connect', () => {
socket.emit('broadcaster', password);
});
socket.on('authError', (msg) => {
alert(msg);
stopSharing();
});
socket.on('viewer', id => {
if (!activeStream) return;
const peerConnection = new RTCPeerConnection(config);
peerConnections[id] = peerConnection;
activeStream.getTracks().forEach(track => {
const sender = peerConnection.addTrack(track, activeStream);
if (track.kind === 'video') {
const params = sender.getParameters();
if (!params.encodings) params.encodings = [{}];
params.encodings[0].maxBitrate = 10000000;
sender.setParameters(params).catch(e => console.error(e));
} else if (track.kind === 'audio') {
const params = sender.getParameters();
if (!params.encodings) params.encodings = [{}];
params.encodings[0].maxBitrate = 510000; // max Opus bitrate
sender.setParameters(params).catch(e => console.error(e));
}
});
peerConnection.onicecandidate = event => {
if (event.candidate) {
socket.emit('candidate', id, event.candidate);
}
};
peerConnection.createOffer().then(sdp => {
if (window.RTCRtpSender && window.RTCRtpSender.getCapabilities) {
const caps = window.RTCRtpSender.getCapabilities('video');
if (caps && caps.codecs) {
const h264 = caps.codecs.filter(c => c.mimeType.toLowerCase() === 'video/h264' || c.mimeType.toLowerCase() === 'video/vp8');
const transceivers = peerConnection.getTransceivers();
transceivers.forEach(t => {
if (t.receiver.track.kind === 'video') t.setCodecPreferences(h264);
});
}
}
// WebRTC defaults to voice-optimized ~32kbps mono. Let's force high-fidelity stereo!
let sdpLines = sdp.sdp.split('\r\n');
let opusPayloadType = null;
for (let i = 0; i < sdpLines.length; i++) {
if (sdpLines[i].includes('a=rtpmap:') && sdpLines[i].includes('opus/48000/2')) {
const match = sdpLines[i].match(/a=rtpmap:(\d+) /);
if (match) opusPayloadType = match[1];
}
}
if (opusPayloadType) {
let fmtpFound = false;
for (let i = 0; i < sdpLines.length; i++) {
if (sdpLines[i].startsWith(`a=fmtp:${opusPayloadType}`)) {
// Completely overwrite the opus config for pristine stereo
sdpLines[i] = `a=fmtp:${opusPayloadType} minptime=10;useinbandfec=1;maxplaybackrate=48000;stereo=1;sprop-stereo=1;maxaveragebitrate=510000;cbr=1`;
fmtpFound = true;
}
}
if (!fmtpFound) {
sdpLines.push(`a=fmtp:${opusPayloadType} minptime=10;useinbandfec=1;maxplaybackrate=48000;stereo=1;sprop-stereo=1;maxaveragebitrate=510000;cbr=1`);
}
}
sdp.sdp = sdpLines.join('\r\n');
return peerConnection.setLocalDescription(sdp);
}).then(() => {
socket.emit('offer', id, peerConnection.localDescription);
});
});
socket.on('answer', (id, description) => {
if (peerConnections[id]) peerConnections[id].setRemoteDescription(description);
});
socket.on('candidate', (id, candidate) => {
if (peerConnections[id]) peerConnections[id].addIceCandidate(new RTCIceCandidate(candidate));
});
socket.on('disconnectPeer', id => {
if (peerConnections[id]) {
peerConnections[id].close();
delete peerConnections[id];
}
});
}
function stopSharing() {
if (activeStream) {
activeStream.getTracks().forEach(t => t.stop());
activeStream = null;
}
if (socket) {
socket.disconnect();
socket = null;
}
Object.values(peerConnections).forEach(pc => pc.close());
peerConnections = {};
localVideo.style.display = 'none';
statsPanel.style.display = 'none';
startBtn.style.display = 'inline-block';
stopBtn.style.display = 'none';
statusText.innerText = 'Not Broadcasting';
}
stopBtn.addEventListener('click', stopSharing);
// --- Stats Monitoring Loop ---
let lastBytesSent = 0;
let lastTimestamp = 0;
setInterval(async () => {
if (!activeStream || Object.keys(peerConnections).length === 0) return;
// Get stats from the first active peer connection
const pc = Object.values(peerConnections)[0];
if (!pc) return;
try {
const stats = await pc.getStats();
stats.forEach(report => {
if (report.type === 'outbound-rtp' && report.kind === 'video') {
const fps = report.framesPerSecond || 0;
const bytesSent = report.bytesSent || 0;
const timestamp = report.timestamp;
const res = `${report.frameWidth || 0}x${report.frameHeight || 0}`;
let bitrate = 0;
if (lastTimestamp && lastBytesSent) {
const timeDiff = timestamp - lastTimestamp; // ms
const bytesDiff = bytesSent - lastBytesSent;
// convert bytes/ms to kbps: (bytes * 8 / 1000) / (timeDiff / 1000) => (bytes * 8) / timeDiff
bitrate = Math.round((bytesDiff * 8) / timeDiff);
}
lastBytesSent = bytesSent;
lastTimestamp = timestamp;
document.getElementById('statsFps').innerText = fps;
document.getElementById('statsRes').innerText = res;
document.getElementById('statsBitrate').innerText = bitrate + ' kbps';
}
});
} catch (e) { console.error("Stats error", e); }
}, 1000);
// Initial load of sources & config
window.electronAPI.getConfig().then(cfg => {
if (cfg.serverUrl) serverUrlInput.value = cfg.serverUrl;
if (cfg.serverPassword) serverPasswordInput.value = cfg.serverPassword;
});
getSourcesBtn.click();

12
client/test-devices.js Normal file
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@@ -0,0 +1,12 @@
const { app, BrowserWindow } = require('electron');
app.whenReady().then(() => {
const win = new BrowserWindow({ show: false });
win.webContents.executeJavaScript(`
navigator.mediaDevices.getUserMedia({audio:true}).then(() =>
navigator.mediaDevices.enumerateDevices()
).then(devices => devices.map(d => d.label))
`).then(labels => {
console.log("LABELS:", labels.filter(l => l.toLowerCase().includes('screenshare')));
app.quit();
});
});

1
public/viewer.html
View File

@@ -15,6 +15,7 @@
<span class="dot pulse"></span> <span class="dot pulse"></span>
<span>Connecting to Broadcaster</span> <span>Connecting to Broadcaster</span>
</div> </div>
<p style="margin-top:20px; font-size: 0.9rem; color: var(--text-secondary);">Click anywhere to enable audio once connected</p>
</div> </div>
<video id="remoteVideo" autoplay playsinline controls></video> <video id="remoteVideo" autoplay playsinline controls></video>
</div> </div>

7
public/viewer.js
View File

@@ -23,6 +23,13 @@ socket.on('offer', (id, description) => {
overlay.classList.add('hidden'); overlay.classList.add('hidden');
}; };
// Auto-unmute when the user interacts with the document to bypass browser// Auto-unmute when the user interacts with the document to bypass browser
document.addEventListener('click', () => {
remoteVideo.muted = false;
// Set sink to max possible volume explicitly avoiding browser gain staging
remoteVideo.volume = 1.0;
}, {once: true});
peerConnection.onicecandidate = event => { peerConnection.onicecandidate = event => {
if (event.candidate) { if (event.candidate) {
socket.emit('candidate', id, event.candidate); socket.emit('candidate', id, event.candidate);