Add Audio Sender Sine Tester script for WebRTC audio management
- Introduce a new user script `audio-sender-sine-tester.js` that lists current WebRTC audio senders and allows temporary sine wave transmission through selected senders. - Implement functionality for managing audio sender candidates, tracking audio statistics, and providing real-time logging of audio activities. - Enhance audio testing capabilities with sine wave generation and track replacement features, improving overall audio management in the WebRTC environment. - This addition supports better monitoring and testing of audio streams in applications utilizing WebRTC.
This commit is contained in:
Xin Wang
371
scripts/audio-sender-sine-tester.js
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371
scripts/audio-sender-sine-tester.js
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// ==UserScript==
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// @name 12345 Audio Sender Sine Tester
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// @namespace http://tampermonkey.net/
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// @version 1.0
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// @description List current WebRTC audio senders and temporarily send a sine wave through a selected sender.
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// @author You
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// @match *://yhy-yw.22sj.cn:*/*
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// @grant none
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// @run-at document-start
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// ==/UserScript==
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(function () {
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'use strict';
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const originalAddTrack = RTCPeerConnection.prototype.addTrack;
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const originalAddTransceiver = RTCPeerConnection.prototype.addTransceiver;
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const originalSetRemoteDescription = RTCPeerConnection.prototype.setRemoteDescription;
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const senderCandidates = new Map();
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const outboundStatsMemory = new Map();
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let activeTest = null;
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let lastRenderAt = 0;
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function nowText() {
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return new Date().toLocaleTimeString([], { hour12: false });
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}
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function shortId(id) {
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if (!id) return 'null';
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return id.length <= 18 ? id : `${id.slice(0, 8)}...${id.slice(-6)}`;
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}
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function log(message) {
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console.log(`[Audio Sine Tester] ${message}`);
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const box = document.getElementById('audio-sine-tester-log');
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if (!box) return;
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const row = document.createElement('div');
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row.textContent = `[${nowText()}] ${message}`;
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box.appendChild(row);
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while (box.children.length > 80) box.removeChild(box.firstChild);
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box.scrollTop = box.scrollHeight;
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}
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function ensureSenderCandidate(sender, track, source) {
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if (!sender) return null;
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const senderTrack = track || sender.track;
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if (senderTrack && senderTrack.kind !== 'audio') return null;
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const id = sender.__audioSineTesterId || `sender-${senderCandidates.size + 1}`;
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sender.__audioSineTesterId = id;
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let candidate = senderCandidates.get(id);
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if (!candidate) {
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candidate = {
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id,
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sender,
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track: senderTrack || null,
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originalTrack: senderTrack || null,
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sources: new Set(),
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bytesSent: 0,
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packetsSent: 0,
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bytesDelta: 0,
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packetsDelta: 0,
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score: 0,
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};
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senderCandidates.set(id, candidate);
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log(`found audio sender ${id} (${source}) track=${senderTrack?.id || 'null'}`);
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}
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candidate.sender = sender;
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candidate.track = sender.track || senderTrack || candidate.track;
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if (sender.track && sender.track.kind === 'audio' && !sender.track.__audioSineTesterTrack) {
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candidate.originalTrack = sender.track;
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}
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candidate.sources.add(source);
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wrapSender(sender);
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return candidate;
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}
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function wrapSender(sender) {
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if (!sender || sender.__audioSineTesterWrapped) return;
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const originalReplaceTrack = sender.replaceTrack?.bind(sender);
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if (!originalReplaceTrack) return;
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sender.replaceTrack = async function (track) {
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const result = await originalReplaceTrack(track);
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const candidate = ensureSenderCandidate(sender, track, 'replaceTrack');
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if (candidate) {
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candidate.track = track || sender.track || candidate.track;
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if (track && !track.__audioSineTesterTrack) candidate.originalTrack = track;
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log(`${candidate.id} replaceTrack -> ${track?.id || 'null'}`);
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}
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return result;
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};
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sender.__audioSineTesterWrapped = true;
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}
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async function refreshSenderStats() {
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for (const candidate of senderCandidates.values()) {
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const sender = candidate.sender;
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candidate.track = sender.track || candidate.track;
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if (!sender.getStats) continue;
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try {
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const report = await sender.getStats();
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report.forEach((stat) => {
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const kind = stat.kind || stat.mediaType;
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if (stat.type !== 'outbound-rtp' || kind !== 'audio') return;
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const key = `${candidate.id}:${stat.id}`;
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const prev = outboundStatsMemory.get(key);
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const bytes = stat.bytesSent || 0;
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const packets = stat.packetsSent || 0;
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candidate.bytesDelta = prev ? Math.max(0, bytes - prev.bytes) : 0;
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candidate.packetsDelta = prev ? Math.max(0, packets - prev.packets) : 0;
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candidate.bytesSent = bytes;
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candidate.packetsSent = packets;
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outboundStatsMemory.set(key, { bytes, packets });
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candidate.score = scoreCandidate(candidate);
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});
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} catch (error) {
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candidate.sources.add(`stats-error:${error.message || error}`);
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}
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}
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}
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function scoreCandidate(candidate) {
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let score = 0;
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if (candidate.track?.kind === 'audio') score += 1000;
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if (candidate.track?.readyState === 'live') score += 800;
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if (candidate.sources.has('pc-addTrack')) score += 1500;
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if (candidate.bytesSent > 0) score += 600;
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if (candidate.bytesDelta > 0) score += Math.min(2500, candidate.bytesDelta * 4);
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if (candidate.packetsDelta > 0) score += Math.min(1000, candidate.packetsDelta * 12);
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return score;
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}
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function makeSineTrack(frequency) {
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const AudioCtx = window.AudioContext || window.webkitAudioContext;
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const context = new AudioCtx({ sampleRate: 48000 });
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const oscillator = context.createOscillator();
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const gain = context.createGain();
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const dest = context.createMediaStreamDestination();
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oscillator.type = 'sine';
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oscillator.frequency.value = frequency;
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gain.gain.value = 0.08;
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oscillator.connect(gain);
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gain.connect(dest);
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oscillator.start();
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const track = dest.stream.getAudioTracks()[0];
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track.__audioSineTesterTrack = true;
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track.__audioSineTesterContext = context;
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track.__audioSineTesterOscillator = oscillator;
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track.__audioSineTesterGain = gain;
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return track;
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}
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function stopTrack(track) {
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if (!track) return;
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try { track.__audioSineTesterOscillator?.stop(); } catch {}
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try { track.stop(); } catch {}
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try { track.__audioSineTesterContext?.close(); } catch {}
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}
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async function startSine(candidateId, frequency) {
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const candidate = senderCandidates.get(candidateId);
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if (!candidate?.sender) return;
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await stopSine(false);
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const originalTrack = candidate.sender.track || candidate.originalTrack || null;
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const sineTrack = makeSineTrack(frequency);
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await candidate.sender.replaceTrack(sineTrack);
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activeTest = {
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candidateId,
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sender: candidate.sender,
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originalTrack,
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sineTrack,
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frequency,
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startedAt: Date.now(),
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};
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candidate.originalTrack = originalTrack;
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candidate.track = sineTrack;
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log(`START ${frequency}Hz on ${candidateId}; original=${originalTrack?.id || 'null'}`);
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renderPanel();
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}
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async function stopSine(shouldLog = true) {
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if (!activeTest) return;
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const test = activeTest;
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activeTest = null;
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try {
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await test.sender.replaceTrack(test.originalTrack || null);
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if (shouldLog) log(`STOP ${test.frequency}Hz on ${test.candidateId}; restored=${test.originalTrack?.id || 'null'}`);
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} catch (error) {
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log(`restore failed on ${test.candidateId}: ${error.message || error}`);
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} finally {
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stopTrack(test.sineTrack);
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}
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renderPanel();
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}
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function dump() {
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return {
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activeTest: activeTest ? {
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candidateId: activeTest.candidateId,
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frequency: activeTest.frequency,
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sineTrackId: activeTest.sineTrack.id,
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originalTrackId: activeTest.originalTrack?.id || null,
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seconds: Math.round((Date.now() - activeTest.startedAt) / 1000),
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} : null,
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senders: Array.from(senderCandidates.values())
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.sort((a, b) => b.score - a.score)
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.map((candidate) => ({
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id: candidate.id,
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active: activeTest?.candidateId === candidate.id,
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trackId: candidate.sender.track?.id || candidate.track?.id || null,
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trackLabel: candidate.sender.track?.label || candidate.track?.label || null,
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originalTrackId: candidate.originalTrack?.id || null,
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trackEnabled: candidate.sender.track?.enabled ?? null,
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trackMuted: candidate.sender.track?.muted ?? null,
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trackReadyState: candidate.sender.track?.readyState || null,
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bytesSent: candidate.bytesSent,
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packetsSent: candidate.packetsSent,
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bytesDelta: candidate.bytesDelta,
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packetsDelta: candidate.packetsDelta,
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score: Math.round(candidate.score),
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sources: Array.from(candidate.sources),
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})),
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};
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}
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function renderPanel() {
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if (!document.body) return;
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let panel = document.getElementById('audio-sine-tester-panel');
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if (!panel) {
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panel = document.createElement('div');
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panel.id = 'audio-sine-tester-panel';
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panel.style.cssText = [
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'position:fixed',
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'top:20px',
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'right:20px',
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'width:500px',
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'max-height:76vh',
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'z-index:999999',
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'box-sizing:border-box',
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'padding:12px',
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'border-radius:8px',
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'background:rgba(3,7,18,.96)',
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'color:#e5e7eb',
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'font:12px ui-monospace,Menlo,monospace',
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'box-shadow:0 12px 32px rgba(0,0,0,.35)',
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'overflow:auto',
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].join(';');
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panel.innerHTML = `
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<div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;">
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<strong style="color:#fcd34d;font:13px system-ui,sans-serif;">Audio Sender Sine Tester</strong>
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<button id="audio-sine-copy" style="border:0;border-radius:5px;padding:5px 8px;background:#2563eb;color:white;cursor:pointer;">copy dump</button>
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</div>
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<div id="audio-sine-summary" style="margin-bottom:8px;color:#d1d5db;"></div>
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<div id="audio-sine-list"></div>
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<div style="display:flex;gap:8px;margin-top:8px;">
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<button id="audio-sine-stop" style="flex:1;border:0;border-radius:5px;padding:8px;background:#dc2626;color:white;cursor:pointer;">stop and restore</button>
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</div>
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<div id="audio-sine-tester-log" style="margin-top:8px;height:90px;overflow:auto;border-top:1px solid #374151;padding-top:6px;color:#a7f3d0;"></div>
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`;
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document.body.appendChild(panel);
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document.getElementById('audio-sine-copy').addEventListener('click', async () => {
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const text = JSON.stringify(window.__audioSineTesterDump(), null, 2);
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await navigator.clipboard?.writeText(text).catch(() => {});
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console.log('[Audio Sine Tester dump]', text);
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log('dump copied to clipboard and console');
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});
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document.getElementById('audio-sine-stop').addEventListener('click', () => stopSine());
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}
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const data = dump();
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document.getElementById('audio-sine-summary').textContent =
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`senders=${data.senders.length}, active=${data.activeTest ? `${data.activeTest.candidateId} ${data.activeTest.frequency}Hz ${data.activeTest.seconds}s` : 'none'}, time=${nowText()}`;
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document.getElementById('audio-sine-list').innerHTML = data.senders.map((row) => {
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const pct = Math.min(100, Math.max(row.bytesDelta / 20, row.packetsDelta * 2));
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const active = row.active;
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return `
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<div style="border:1px solid ${active ? '#f59e0b' : '#374151'};border-radius:6px;padding:8px;margin-bottom:6px;">
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<div style="display:flex;justify-content:space-between;gap:8px;color:${active ? '#fcd34d' : '#cbd5e1'};">
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<span>${active ? '*' : '-'} ${row.id}</span>
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<span>score=${row.score}</span>
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</div>
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<div style="height:6px;background:#374151;border-radius:999px;overflow:hidden;margin:6px 0;">
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<div style="height:100%;width:${pct}%;background:linear-gradient(90deg,#60a5fa,#fcd34d);"></div>
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</div>
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<div style="color:#cbd5e1;line-height:1.45;word-break:break-all;">
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track=${shortId(row.trackId)} label=${row.trackLabel || 'null'} muted=${row.trackMuted} bytesDelta=${row.bytesDelta} packetsDelta=${row.packetsDelta}
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</div>
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<div style="display:flex;gap:6px;margin-top:6px;">
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<button data-sine="${row.id}:440" style="border:0;border-radius:5px;padding:6px 8px;background:#059669;color:white;cursor:pointer;">440Hz</button>
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<button data-sine="${row.id}:880" style="border:0;border-radius:5px;padding:6px 8px;background:#7c3aed;color:white;cursor:pointer;">880Hz</button>
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</div>
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<div style="color:#94a3b8;margin-top:5px;word-break:break-all;">${row.sources.join(', ')}</div>
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</div>
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`;
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}).join('');
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panel.querySelectorAll('[data-sine]').forEach((button) => {
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button.onclick = () => {
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const [id, hz] = button.dataset.sine.split(':');
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startSine(id, Number(hz));
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};
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});
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}
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RTCPeerConnection.prototype.addTrack = function (track, ...streams) {
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const sender = originalAddTrack.call(this, track, ...streams);
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if (track?.kind === 'audio') ensureSenderCandidate(sender, track, 'pc-addTrack');
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return sender;
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};
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if (originalAddTransceiver) {
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RTCPeerConnection.prototype.addTransceiver = function (trackOrKind, init) {
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const transceiver = originalAddTransceiver.call(this, trackOrKind, init);
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const kind = trackOrKind instanceof MediaStreamTrack ? trackOrKind.kind : trackOrKind;
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if (kind === 'audio') {
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const track = trackOrKind instanceof MediaStreamTrack ? trackOrKind : transceiver.sender?.track;
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ensureSenderCandidate(transceiver.sender, track, 'pc-addTransceiver');
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}
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return transceiver;
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};
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}
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RTCPeerConnection.prototype.setRemoteDescription = function () {
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const result = originalSetRemoteDescription.apply(this, arguments);
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Promise.resolve(result).then(() => {
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try {
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for (const sender of this.getSenders?.() || []) {
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ensureSenderCandidate(sender, sender.track, 'sender-after-srd');
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}
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} catch (error) {
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console.warn('[Audio Sine Tester] failed to scan senders', error);
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}
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});
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return result;
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};
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window.__audioSineTesterDump = dump;
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window.__audioSineTesterStop = stopSine;
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setInterval(refreshSenderStats, 250);
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setInterval(() => {
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if (Date.now() - lastRenderAt < 500) return;
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lastRenderAt = Date.now();
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renderPanel();
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}, 250);
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window.addEventListener('beforeunload', () => {
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if (activeTest) stopSine(false);
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});
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if (document.readyState === 'loading') {
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document.addEventListener('DOMContentLoaded', renderPanel, { once: true });
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} else {
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renderPanel();
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}
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})();
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Block a user