Church Translate, as it runs at the campuses

Live sermon translation into 100+ languages, running entirely on one Mac per campus: audio in, voice detection, Whisper on the GPU, NLLB-200 in its own process, and a built-in web server the congregation reads from on their phones. No audio leaves the building. This is the source only. What used to sit beside it — 14 GB of speech and translation models, 8 GB of voice bundles, 6 GB of natural voices, the Electron caches, and the app data holding the operator PIN and every service transcript — is machine state and downloaded assets, and stays in the NAS backup where it belongs. The vendored node, cloudflared and Windows ffmpeg binaries are out too (533 MB, re-fetched for packaging); the browser-side runtime beside them is kept, so a checkout still serves the congregation page. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-09-23 15:41:21 -04:00
commit c9eef0672c
118 changed files with 36031 additions and 0 deletions
@@ -0,0 +1,57 @@
+/*
+ * preload.js — the only bridge between the renderer and Node.
+ * Nothing here takes a path or a command from the page; every call is a fixed
+ * verb with no free-form arguments beyond a config patch.
+ */
+'use strict';
+
+const { contextBridge, ipcRenderer } = require('electron');
+
+contextBridge.exposeInMainWorld('engineHost', {
+  getConfig:    ()      => ipcRenderer.invoke('config:get'),
+  setConfig:    (patch) => ipcRenderer.invoke('config:set', patch),
+  micStatus:    ()      => ipcRenderer.invoke('mic:status'),
+  askMic:       ()      => ipcRenderer.invoke('mic:ask'),
+  openPrivacy:  ()      => ipcRenderer.invoke('app:openPrivacy'),
+  cacheInfo:    ()      => ipcRenderer.invoke('app:cacheInfo'),
+  revealCache:  ()      => ipcRenderer.invoke('app:revealCache'),
+  copyText:     (text)  => ipcRenderer.invoke('app:copy', text),
+  setLive:      (live)  => ipcRenderer.send('engine:live', !!live),
+  logLine:      (line)  => ipcRenderer.send('log:line', String(line || '')),
+
+  /* Translation lives in the main process; these are its only two verbs. */
+  mtEnsure:     ()      => ipcRenderer.invoke('mt:ensure'),
+  settingsExport: ()    => ipcRenderer.invoke('settings:export'),
+  settingsImport: ()    => ipcRenderer.invoke('settings:import'),
+  audioDevices: ()      => ipcRenderer.invoke('audio:devices'),
+  modelsCached: (id)    => ipcRenderer.invoke('models:cached', id),
+  mtTranslate:  (req)   => ipcRenderer.invoke('mt:translate', req),
+  mtTranslateMulti: (req) => ipcRenderer.invoke('mt:translateMulti', req),
+  onMtProgress: (fn)    => ipcRenderer.on('mt:progress', (_e, p) => fn(p)),
+  onMtDown:     (fn)    => ipcRenderer.on('mt:down', (_e, info) => fn(info)),
+
+  /* The congregation server runs inside this app; these describe it. */
+  localInfo:    ()      => ipcRenderer.invoke('local:info'),
+  onServerUp:   (fn)    => ipcRenderer.on('server:up', (_e, info) => fn(info)),
+  onServerDown: (fn)    => ipcRenderer.on('server:down', () => fn()),
+
+  /* Share to the internet: a Cloudflare quick tunnel for livestream viewers. */
+  tunnelStart:   ()   => ipcRenderer.invoke('tunnel:start'),
+  tunnelStop:    ()   => ipcRenderer.invoke('tunnel:stop'),
+  tunnelStatus:  ()   => ipcRenderer.invoke('tunnel:status'),
+  onTunnel:      (fn) => ipcRenderer.on('tunnel:status', (_e, s) => fn(s)),
+
+  /* Built-in voices: this Mac speaks, and the phones play what it sends. */
+  ttsInfo:       ()      => ipcRenderer.invoke('tts:info'),
+  ttsSpeak:      (req)   => ipcRenderer.invoke('tts:speak', req),
+  ttsPreload:    (langs) => ipcRenderer.invoke('tts:preload', langs),
+  /* Audition one specific voice, and save the per-language choices. */
+  ttsAudition:   (req)   => ipcRenderer.invoke('tts:audition', req),
+  ttsSetVoices:  (c)     => ipcRenderer.invoke('tts:setVoices', c),
+  ttsSetListenerVoices: (m) => ipcRenderer.invoke('tts:setListenerVoices', m),
+  onTtsReady:    (fn)    => ipcRenderer.on('tts:ready', (_e, i) => fn(i)),
+  onTtsProgress: (fn)    => ipcRenderer.on('tts:progress', (_e, p) => fn(p)),
+  onTtsCloud:    (fn)    => ipcRenderer.on('tts:cloud', (_e, s) => fn(s)),
+  onLocalVoices: (fn)    => ipcRenderer.on('localvoices:status', (_e, s) => fn(s)),
+  localVoicesStatus: ()  => ipcRenderer.invoke('localvoices:status')
+});