mirror of
https://github.com/legop3/MultiRoombaRover.git
synced 2026-09-16 09:31:20 -04:00
gahew
This commit is contained in:
legop3
@@ -0,0 +1,660 @@
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// audio Forward Service
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// Purpose: Defines the audio Forward Service module and the helpers/state used by this service unit.
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// Scope: Keeps runtime behavior unchanged while isolating responsibilities into a clear module boundary.
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const fs = require('fs');
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const path = require('path');
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const { spawn, spawnSync } = require('child_process');
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const EventEmitter = require('events');
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const io = require('../../globals/io');
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const logger = require('../../globals/logger').child('audioForwardService');
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const { loadConfig } = require('../../helpers/configLoader');
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const roverManager = require('../roverManager');
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const turnService = require('../turnService');
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const { isVerified } = require('../verificationService');
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const videoSessions = require('../videoSessions');
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const audioForwardEvents = new EventEmitter();
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const config = loadConfig();
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const audioForwardConfig = config.audioForward || {};
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const mediaConfig = config.media || {};
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const serviceEnabled = audioForwardConfig.enabled !== false;
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const ffmpegBin = audioForwardConfig.ffmpegBin || 'ffmpeg';
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const streamSuffix =
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typeof audioForwardConfig.streamSuffix === 'string' && audioForwardConfig.streamSuffix.trim()
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? audioForwardConfig.streamSuffix.trim()
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: '-fwd';
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const runtimeDir = path.resolve(audioForwardConfig.runtimeDir || '/tmp/mrr-audio-forward');
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const uploadsDir = path.join(runtimeDir, 'uploads');
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const maxUploadBytes = Number.isFinite(audioForwardConfig.maxUploadBytes)
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? Math.max(256 * 1024, Math.floor(audioForwardConfig.maxUploadBytes))
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: 8 * 1024 * 1024;
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const states = new Map(); // roverId -> { state, source, error, startedAt, updatedAt }
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const workers = new Map(); // roverId -> worker
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const whipOwners = new Map(); // roverId -> socketId
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function publishStateChange(roverId) {
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audioForwardEvents.emit('change', { roverId, state: states.get(roverId) || null });
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}
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function setState(roverId, next = {}) {
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const prev = states.get(roverId) || {};
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const merged = {
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state: next.state || prev.state || 'idle',
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source: Object.prototype.hasOwnProperty.call(next, 'source') ? next.source : prev.source || 'silence',
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error: Object.prototype.hasOwnProperty.call(next, 'error') ? next.error : prev.error || null,
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startedAt: Object.prototype.hasOwnProperty.call(next, 'startedAt') ? next.startedAt : prev.startedAt || null,
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updatedAt: Date.now(),
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};
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states.set(roverId, merged);
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publishStateChange(roverId);
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}
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function getAudioForwardState() {
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const payload = {};
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states.forEach((entry, roverId) => {
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payload[roverId] = { ...entry };
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});
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return payload;
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}
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function ensureRuntimeDir() {
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fs.mkdirSync(runtimeDir, { recursive: true });
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fs.mkdirSync(uploadsDir, { recursive: true });
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}
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function sanitizeRoverId(roverId) {
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return String(roverId || '').replace(/[^a-zA-Z0-9_-]+/g, '_');
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}
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function sanitizeFileStem(name) {
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return String(name || 'upload')
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.toLowerCase()
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.replace(/[^a-z0-9._-]+/g, '_')
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.replace(/^_+|_+$/g, '')
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.slice(0, 64);
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}
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function extFromUpload(name, mime) {
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const lowerName = String(name || '').toLowerCase();
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const lowerMime = String(mime || '').toLowerCase();
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if (lowerName.endsWith('.mp3') || lowerMime === 'audio/mpeg' || lowerMime === 'audio/mp3') return '.mp3';
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if (lowerName.endsWith('.wav') || lowerMime === 'audio/wav' || lowerMime === 'audio/x-wav') return '.wav';
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if (lowerName.endsWith('.ogg') || lowerMime === 'audio/ogg') return '.ogg';
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throw new Error('Unsupported upload format (allowed: mp3, wav, ogg)');
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}
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function ensureVipVerified(socket) {
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if (!isVerified(socket)) {
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throw new Error('VIP verification required');
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}
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}
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function ensureAudioForwardPermission(socket, roverId) {
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ensureVipVerified(socket);
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if (!roverManager.isDriver(roverId, socket)) {
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throw new Error('Audio forwarding is only allowed on your own rover');
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}
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if (!turnService.canDrive(roverId, socket)) {
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throw new Error('Only the current driver can play audio');
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}
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}
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function ensureFifo(fifoPath) {
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try {
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const stat = fs.statSync(fifoPath);
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if (stat.isFIFO()) return;
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fs.unlinkSync(fifoPath);
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} catch (err) {
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if (err.code !== 'ENOENT') throw err;
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}
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const result = spawnSync('mkfifo', [fifoPath], { encoding: 'utf8' });
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if (result.status !== 0) {
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throw new Error(`mkfifo failed: ${result.stderr || result.stdout || 'unknown error'}`);
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}
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}
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function forcePublishStreamMode(rawUrl) {
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const value = String(rawUrl || '').trim();
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if (!value) return '';
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if (!/[?&]streamid=#!::/.test(value)) return value;
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if (/,m=publish\b/.test(value)) return value;
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if (/,m=[a-zA-Z]+\b/.test(value)) return value.replace(/,m=[a-zA-Z]+\b/, ',m=publish');
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return value.replace(/([?&]streamid=#!::[^&]*)/, '$1,m=publish');
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}
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function resolveForwardUrl(roverId) {
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const record = roverManager.rovers.get(roverId);
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const configured = record?.meta?.media?.audioForwardUrl;
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if (configured) return forcePublishStreamMode(configured);
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return `srt://127.0.0.1:9000?streamid=#!::r=${encodeURIComponent(
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roverId + streamSuffix,
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)},m=publish&latency=10&mode=caller&transtype=live&pkt_size=1316`;
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}
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function resolveForwardPathId(roverId) {
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return `${roverId}${streamSuffix}`;
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}
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function getMediaPrefix() {
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const base = mediaConfig.whepBaseUrl;
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if (!base) return '';
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try {
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const parsed = new URL(base);
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return `${parsed.origin}${parsed.pathname}`.replace(/\/+$/, '');
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} catch {
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return String(base).replace(/\/+$/, '');
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}
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}
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function buildWhipUrl(pathId) {
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const prefix = getMediaPrefix();
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if (!prefix) {
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throw new Error('Server media base URL missing');
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}
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return `${prefix}/${encodeURIComponent(pathId)}/whip`;
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}
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function spawnFfmpeg(roverId, tag, args, options = {}) {
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const proc = spawn(ffmpegBin, args, {
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stdio: [options.captureStdin ? 'pipe' : 'ignore', options.captureStdout ? 'pipe' : 'ignore', 'pipe'],
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});
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proc.stderr?.on('data', (chunk) => {
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const text = String(chunk || '').trim();
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if (!text) return;
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logger.warn(`${tag} stderr`, { roverId, text });
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});
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proc.on('error', (err) => {
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logger.warn(`${tag} spawn error`, { roverId, message: err?.message || String(err) });
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});
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return proc;
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}
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function stopProc(proc, graceMs = 1200) {
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if (!proc || proc.killed) return;
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try {
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proc.kill('SIGTERM');
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} catch {
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return;
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}
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setTimeout(() => {
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if (!proc.killed) {
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try {
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proc.kill('SIGKILL');
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} catch {
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// noop
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}
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}
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}, graceMs);
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}
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function buildPublisherArgs(fifoPath, outputUrl) {
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return [
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'-hide_banner',
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'-loglevel',
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'warning',
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'-f',
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's16le',
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'-ar',
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'16000',
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'-ac',
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'1',
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'-i',
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fifoPath,
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'-c:a',
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'libopus',
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'-b:a',
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'24000',
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'-ar:a',
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'16000',
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'-ac:a',
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'1',
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'-application',
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'lowdelay',
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'-frame_duration',
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'10',
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'-compression_level',
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'0',
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'-fflags',
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'nobuffer',
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'-flush_packets',
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'1',
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'-muxdelay',
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'0',
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'-muxpreload',
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'0',
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'-f',
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'mpegts',
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outputUrl,
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];
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}
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function buildSilenceWriterArgs() {
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return [
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'-hide_banner',
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'-loglevel',
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'warning',
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'-re',
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'-f',
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'lavfi',
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'-i',
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'anullsrc=channel_layout=mono:sample_rate=16000',
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'-f',
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's16le',
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'-ac',
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'1',
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'-ar',
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'16000',
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'pipe:1',
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];
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}
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function buildUploadWriterArgs(filePath) {
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return [
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'-hide_banner',
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'-loglevel',
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'warning',
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'-re',
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'-i',
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filePath,
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'-vn',
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'-af',
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'aresample=16000',
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'-f',
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's16le',
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'-ac',
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'1',
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'-ar',
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'16000',
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'pipe:1',
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];
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}
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function attachWriterPipe(worker, proc) {
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const writer = fs.createWriteStream(worker.fifoPath, { flags: 'w' });
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writer.on('error', (err) => {
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const code = err?.code || 'unknown';
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if (code !== 'EPIPE') {
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logger.warn('writer pipe error', { roverId: worker?.roverId, code, message: err?.message || String(err) });
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}
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});
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proc.stdout.on('error', (err) => {
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logger.warn('writer stdout error', {
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roverId: worker?.roverId,
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code: err?.code || 'unknown',
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message: err?.message || String(err),
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});
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});
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proc.stdout.pipe(writer);
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proc.on('exit', () => {
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writer.destroy();
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});
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}
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function cleanupUploadFile(worker) {
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if (!worker?.activeUploadPath) return;
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try {
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fs.unlinkSync(worker.activeUploadPath);
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} catch {
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// noop
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}
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worker.activeUploadPath = null;
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}
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function stopContentProc(worker) {
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if (!worker) return;
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if (worker.contentProc) {
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stopProc(worker.contentProc);
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}
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worker.contentProc = null;
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worker.contentKind = null;
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}
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function startSilenceWriter(roverId) {
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const worker = workers.get(roverId);
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if (!worker || worker.stopping) return;
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stopContentProc(worker);
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cleanupUploadFile(worker);
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worker.activeOwnerSocketId = null;
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const proc = spawnFfmpeg(roverId, 'silence-writer', buildSilenceWriterArgs(), { captureStdout: true });
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worker.contentProc = proc;
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worker.contentKind = 'silence';
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const seq = ++worker.writerSeq;
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attachWriterPipe(worker, proc);
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proc.on('exit', (code, signal) => {
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const current = workers.get(roverId);
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if (!current || current.stopping) return;
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if (current.writerSeq !== seq || current.contentProc !== proc) return;
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current.contentProc = null;
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current.contentKind = null;
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if (code === 0 || signal === 'SIGTERM') return;
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setState(roverId, {
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state: 'error',
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source: 'silence',
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error: `silence writer exited code=${code} signal=${signal || 'none'}`,
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startedAt: null,
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});
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setTimeout(() => {
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if (workers.has(roverId)) startSilenceWriter(roverId);
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}, 300);
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});
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setState(roverId, { state: 'idle', source: 'silence', error: null, startedAt: null });
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}
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function startUploadWriter(roverId, filePath, ownerSocketId) {
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const worker = workers.get(roverId);
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if (!worker || worker.stopping) return;
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stopContentProc(worker);
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cleanupUploadFile(worker);
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worker.activeUploadPath = filePath;
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worker.activeOwnerSocketId = ownerSocketId || null;
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const proc = spawnFfmpeg(roverId, 'upload-writer', buildUploadWriterArgs(filePath), { captureStdout: true });
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worker.contentProc = proc;
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worker.contentKind = 'upload';
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const seq = ++worker.writerSeq;
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attachWriterPipe(worker, proc);
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||||
setState(roverId, { state: 'playing', source: 'upload', error: null, startedAt: Date.now() });
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||||
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proc.on('exit', (code, signal) => {
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||||
const current = workers.get(roverId);
|
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if (!current || current.stopping) return;
|
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if (current.writerSeq !== seq || current.contentProc !== proc) return;
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current.contentProc = null;
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||||
current.contentKind = null;
|
||||
|
||||
if (code != null && code !== 0 && signal !== 'SIGTERM') {
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setState(roverId, {
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state: 'error',
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||||
source: 'upload',
|
||||
error: `upload writer exited code=${code} signal=${signal || 'none'}`,
|
||||
startedAt: null,
|
||||
});
|
||||
}
|
||||
startSilenceWriter(roverId);
|
||||
});
|
||||
}
|
||||
|
||||
function ensureWorker(roverId) {
|
||||
if (!serviceEnabled) throw new Error('Audio forward disabled');
|
||||
if (!roverId) throw new Error('roverId required');
|
||||
|
||||
const record = roverManager.rovers.get(roverId);
|
||||
if (!record || !record.ws) throw new Error('Rover offline');
|
||||
|
||||
if (workers.has(roverId)) return workers.get(roverId);
|
||||
|
||||
ensureRuntimeDir();
|
||||
const fifoPath = path.join(runtimeDir, `${sanitizeRoverId(roverId)}.pcm`);
|
||||
ensureFifo(fifoPath);
|
||||
const outputUrl = resolveForwardUrl(roverId);
|
||||
|
||||
const keepaliveFd = fs.openSync(fifoPath, 'r+');
|
||||
const publisher = spawnFfmpeg(roverId, 'publisher', buildPublisherArgs(fifoPath, outputUrl));
|
||||
|
||||
const worker = {
|
||||
roverId,
|
||||
fifoPath,
|
||||
keepaliveFd,
|
||||
outputUrl,
|
||||
publisherProc: publisher,
|
||||
contentProc: null,
|
||||
contentKind: null,
|
||||
writerSeq: 0,
|
||||
activeOwnerSocketId: null,
|
||||
activeUploadPath: null,
|
||||
stopping: false,
|
||||
};
|
||||
workers.set(roverId, worker);
|
||||
|
||||
publisher.on('exit', (code, signal) => {
|
||||
const current = workers.get(roverId);
|
||||
if (!current || current.publisherProc !== publisher || current.stopping) return;
|
||||
setState(roverId, {
|
||||
state: 'error',
|
||||
source: current.contentKind || 'publish',
|
||||
error: `publisher exited code=${code} signal=${signal || 'none'}`,
|
||||
startedAt: null,
|
||||
});
|
||||
});
|
||||
|
||||
startSilenceWriter(roverId);
|
||||
logger.info('Audio forward worker ready', { roverId, outputUrl, fifoPath });
|
||||
return worker;
|
||||
}
|
||||
|
||||
function stopWorker(roverId) {
|
||||
const whipOwner = whipOwners.get(roverId);
|
||||
if (whipOwner) {
|
||||
whipOwners.delete(roverId);
|
||||
revokeWhipSessionForRover(roverId, whipOwner);
|
||||
}
|
||||
|
||||
const worker = workers.get(roverId);
|
||||
if (!worker) return;
|
||||
|
||||
worker.stopping = true;
|
||||
stopContentProc(worker);
|
||||
cleanupUploadFile(worker);
|
||||
stopProc(worker.publisherProc);
|
||||
|
||||
try {
|
||||
fs.closeSync(worker.keepaliveFd);
|
||||
} catch {
|
||||
// noop
|
||||
}
|
||||
try {
|
||||
fs.unlinkSync(worker.fifoPath);
|
||||
} catch {
|
||||
// noop
|
||||
}
|
||||
|
||||
workers.delete(roverId);
|
||||
setState(roverId, { state: 'offline', source: 'none', error: null, startedAt: null });
|
||||
}
|
||||
|
||||
function writeUploadFile(roverId, payload = {}) {
|
||||
const { name, mime, dataBase64 } = payload || {};
|
||||
const ext = extFromUpload(name, mime);
|
||||
const encoded = typeof dataBase64 === 'string' ? dataBase64.trim() : '';
|
||||
if (!encoded) throw new Error('Upload payload missing');
|
||||
|
||||
const bytes = Buffer.from(encoded, 'base64');
|
||||
if (!bytes.length) throw new Error('Upload decode failed');
|
||||
if (bytes.length > maxUploadBytes) throw new Error(`Upload too large (max ${maxUploadBytes} bytes)`);
|
||||
|
||||
ensureRuntimeDir();
|
||||
const stem = sanitizeFileStem(name || `upload-${Date.now()}`);
|
||||
const filePath = path.join(uploadsDir, `${sanitizeRoverId(roverId)}-${Date.now()}-${stem}${ext}`);
|
||||
fs.writeFileSync(filePath, bytes);
|
||||
return filePath;
|
||||
}
|
||||
|
||||
function playUploadedAudio(roverId, payload = {}, ownerSocketId = null) {
|
||||
stopWhipForRover(roverId, 'upload_override');
|
||||
ensureWorker(roverId);
|
||||
const uploadPath = writeUploadFile(roverId, payload);
|
||||
startUploadWriter(roverId, uploadPath, ownerSocketId);
|
||||
}
|
||||
|
||||
function stopPlayback(roverId) {
|
||||
stopWhipForRover(roverId, 'stop_playback');
|
||||
ensureWorker(roverId);
|
||||
startSilenceWriter(roverId);
|
||||
}
|
||||
|
||||
function revokeWhipSessionForRover(roverId, ownerSocketId) {
|
||||
if (!roverId || !ownerSocketId) return;
|
||||
const pathId = resolveForwardPathId(roverId);
|
||||
videoSessions.revokeWhere(
|
||||
(info) => info?.socketId === ownerSocketId && info?.sourceType === 'roverMic' && info?.sourceId === pathId,
|
||||
);
|
||||
}
|
||||
|
||||
function stopWhipForRover(roverId, reason = 'unknown') {
|
||||
const ownerSocketId = whipOwners.get(roverId);
|
||||
if (!ownerSocketId) return;
|
||||
whipOwners.delete(roverId);
|
||||
revokeWhipSessionForRover(roverId, ownerSocketId);
|
||||
logger.info('Stopping WHIP mic session', { roverId, ownerSocketId, reason });
|
||||
try {
|
||||
ensureWorker(roverId);
|
||||
startSilenceWriter(roverId);
|
||||
} catch (err) {
|
||||
setState(roverId, { state: 'error', source: 'mic-whip', error: err?.message || String(err), startedAt: null });
|
||||
}
|
||||
}
|
||||
|
||||
function stopOwnedAudioIfUnauthorized(roverId, ownerSocketId, reason = 'driver_change') {
|
||||
if (!roverId || !ownerSocketId) return;
|
||||
|
||||
if (whipOwners.get(roverId) === ownerSocketId) {
|
||||
const ownerSocket = io.sockets.sockets.get(ownerSocketId);
|
||||
const ownerIsDriver = ownerSocket ? roverManager.isDriver(roverId, ownerSocket) : false;
|
||||
const ownerCanDrive = ownerSocket ? turnService.canDrive(roverId, ownerSocket) : false;
|
||||
if (!ownerIsDriver || !ownerCanDrive) {
|
||||
stopWhipForRover(roverId, reason);
|
||||
}
|
||||
}
|
||||
|
||||
const worker = workers.get(roverId);
|
||||
if (!worker || worker.contentKind !== 'upload' || worker.activeOwnerSocketId !== ownerSocketId) return;
|
||||
|
||||
const ownerSocket = io.sockets.sockets.get(ownerSocketId);
|
||||
const ownerIsDriver = ownerSocket ? roverManager.isDriver(roverId, ownerSocket) : false;
|
||||
const ownerCanDrive = ownerSocket ? turnService.canDrive(roverId, ownerSocket) : false;
|
||||
if (ownerIsDriver && ownerCanDrive) return;
|
||||
|
||||
logger.info('Stopping upload audio due to ownership/driver change', { roverId, ownerSocketId, reason });
|
||||
startSilenceWriter(roverId);
|
||||
}
|
||||
|
||||
roverManager.managerEvents.on('rover', ({ roverId, action } = {}) => {
|
||||
if (!roverId) return;
|
||||
if (action === 'removed') {
|
||||
stopWorker(roverId);
|
||||
return;
|
||||
}
|
||||
if (action === 'upsert' && serviceEnabled) {
|
||||
if (whipOwners.has(roverId)) {
|
||||
return;
|
||||
}
|
||||
try {
|
||||
ensureWorker(roverId);
|
||||
} catch (err) {
|
||||
setState(roverId, { state: 'error', source: 'init', error: err.message, startedAt: null });
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
roverManager.managerEvents.on('driver', ({ socketId, roverId, action } = {}) => {
|
||||
if (!socketId || !roverId) return;
|
||||
if (action === 'remove' || action === 'add') {
|
||||
stopOwnedAudioIfUnauthorized(roverId, socketId, action);
|
||||
}
|
||||
});
|
||||
|
||||
turnService.turnEvents.on('activeDriver', ({ roverId } = {}) => {
|
||||
if (!roverId) return;
|
||||
const whipOwner = whipOwners.get(roverId);
|
||||
if (whipOwner) {
|
||||
stopOwnedAudioIfUnauthorized(roverId, whipOwner, 'turn_change');
|
||||
}
|
||||
const worker = workers.get(roverId);
|
||||
if (!worker || worker.contentKind !== 'upload') return;
|
||||
stopOwnedAudioIfUnauthorized(roverId, worker.activeOwnerSocketId, 'turn_change');
|
||||
});
|
||||
|
||||
io.on('connection', (socket) => {
|
||||
socket.on('audio:uploadPlay', (payload = {}, cb = () => {}) => {
|
||||
try {
|
||||
const roverId = String(payload?.roverId || '').trim();
|
||||
ensureAudioForwardPermission(socket, roverId);
|
||||
playUploadedAudio(roverId, payload, socket.id);
|
||||
cb({ success: true, roverId });
|
||||
} catch (err) {
|
||||
cb({ error: err.message });
|
||||
}
|
||||
});
|
||||
|
||||
socket.on('audio:uploadStop', ({ roverId } = {}, cb = () => {}) => {
|
||||
try {
|
||||
const normalized = String(roverId || '').trim();
|
||||
ensureAudioForwardPermission(socket, normalized);
|
||||
const worker = workers.get(normalized);
|
||||
if (worker && worker.contentKind === 'upload' && worker.activeOwnerSocketId !== socket.id) {
|
||||
throw new Error('Upload playback is owned by another session');
|
||||
}
|
||||
stopPlayback(normalized);
|
||||
cb({ success: true, roverId: normalized });
|
||||
} catch (err) {
|
||||
cb({ error: err.message });
|
||||
}
|
||||
});
|
||||
|
||||
socket.on('audio:micWhipStart', ({ roverId } = {}, cb = () => {}) => {
|
||||
try {
|
||||
const normalized = String(roverId || '').trim();
|
||||
ensureAudioForwardPermission(socket, normalized);
|
||||
stopWorker(normalized);
|
||||
whipOwners.set(normalized, socket.id);
|
||||
const pathId = resolveForwardPathId(normalized);
|
||||
revokeWhipSessionForRover(normalized, socket.id);
|
||||
const token = videoSessions.createSession(socket, { type: 'roverMic', id: pathId });
|
||||
const whipUrl = buildWhipUrl(pathId);
|
||||
setState(normalized, { state: 'starting', source: 'mic-whip', error: null, startedAt: Date.now() });
|
||||
cb({ success: true, roverId: normalized, pathId, token, whipUrl });
|
||||
} catch (err) {
|
||||
cb({ error: err.message });
|
||||
}
|
||||
});
|
||||
|
||||
socket.on('audio:micWhipReady', ({ roverId } = {}, cb = () => {}) => {
|
||||
try {
|
||||
const normalized = String(roverId || '').trim();
|
||||
ensureAudioForwardPermission(socket, normalized);
|
||||
if (whipOwners.get(normalized) !== socket.id) {
|
||||
throw new Error('WHIP session not owned by this client');
|
||||
}
|
||||
setState(normalized, { state: 'playing', source: 'mic-whip', error: null, startedAt: Date.now() });
|
||||
cb({ success: true, roverId: normalized });
|
||||
} catch (err) {
|
||||
cb({ error: err.message });
|
||||
}
|
||||
});
|
||||
|
||||
socket.on('audio:micWhipStop', ({ roverId } = {}, cb = () => {}) => {
|
||||
try {
|
||||
const normalized = String(roverId || '').trim();
|
||||
ensureAudioForwardPermission(socket, normalized);
|
||||
if (whipOwners.get(normalized) && whipOwners.get(normalized) !== socket.id) {
|
||||
throw new Error('Mic forwarding is owned by another session');
|
||||
}
|
||||
stopWhipForRover(normalized, 'client_stop');
|
||||
cb({ success: true, roverId: normalized });
|
||||
} catch (err) {
|
||||
cb({ error: err.message });
|
||||
}
|
||||
});
|
||||
|
||||
socket.on('disconnect', () => {
|
||||
workers.forEach((worker, roverId) => {
|
||||
if (!worker || worker.contentKind !== 'upload' || worker.activeOwnerSocketId !== socket.id) return;
|
||||
logger.info('Stopping owned upload audio due to socket disconnect', { roverId, socketId: socket.id });
|
||||
startSilenceWriter(roverId);
|
||||
});
|
||||
for (const [roverId, ownerSocketId] of whipOwners.entries()) {
|
||||
if (ownerSocketId !== socket.id) continue;
|
||||
stopWhipForRover(roverId, 'socket_disconnect');
|
||||
}
|
||||
});
|
||||
});
|
||||
|
||||
module.exports = {
|
||||
getAudioForwardState,
|
||||
audioForwardEvents,
|
||||
};
|
||||
Reference in New Issue
Block a user