workaround to get the list of microphones in the extension

chrome-extension/README.md

@@ -9,5 +9,9 @@ Capture the audio of your current tab, transcribe or translate it using Whisperl
 
 
 ## Devs:
-- Impossible to capture audio from tabs if extension is a pannel, unfortunately: https://issues.chromium.org/issues/40926394
+- Impossible to capture audio from tabs if extension is a pannel, unfortunately: 
+- https://issues.chromium.org/issues/40926394
+- https://groups.google.com/a/chromium.org/g/chromium-extensions/c/DET2SXCFnDg
+- https://issues.chromium.org/issues/40916430
+
 - To capture microphone in an extension, there are tricks: https://github.com/justinmann/sidepanel-audio-issue , https://medium.com/@lynchee.owo/how-to-enable-microphone-access-in-chrome-extensions-by-code-924295170080 (comments)

chrome-extension/background.js

@@ -0,0 +1,9 @@
+chrome.runtime.onInstalled.addListener((details) => {
+    if (details.reason.search(/install/g) === -1) {
+        return
+    }
+    chrome.tabs.create({
+        url: chrome.runtime.getURL("welcome.html"),
+        active: true
+    })
+})

chrome-extension/example_tab_capture.js

@@ -1,315 +0,0 @@
-const extend = function() { //helper function to merge objects
-  let target = arguments[0],
-      sources = [].slice.call(arguments, 1);
-  for (let i = 0; i < sources.length; ++i) {
-    let src = sources[i];
-    for (key in src) {
-      let val = src[key];
-      target[key] = typeof val === "object"
-        ? extend(typeof target[key] === "object" ? target[key] : {}, val)
-        : val;
-    }
-  }
-  return target;
-};
-
-const WORKER_FILE = {
-  wav: "WavWorker.js",
-  mp3: "Mp3Worker.js"
-};
-
-// default configs
-const CONFIGS = {
-  workerDir: "/workers/",     // worker scripts dir (end with /)
-  numChannels: 2,     // number of channels
-  encoding: "wav",    // encoding (can be changed at runtime)
-
-  // runtime options
-  options: {
-    timeLimit: 1200,           // recording time limit (sec)
-    encodeAfterRecord: true, // process encoding after recording
-    progressInterval: 1000,   // encoding progress report interval (millisec)
-    bufferSize: undefined,    // buffer size (use browser default)
-
-    // encoding-specific options
-    wav: {
-      mimeType: "audio/wav"
-    },
-    mp3: {
-      mimeType: "audio/mpeg",
-      bitRate: 192            // (CBR only): bit rate = [64 .. 320]
-    }
-  }
-};
-
-class Recorder {
-
-  constructor(source, configs) { //creates audio context from the source and connects it to the worker
-    extend(this, CONFIGS, configs || {});
-    this.context = source.context;
-    if (this.context.createScriptProcessor == null)
-      this.context.createScriptProcessor = this.context.createJavaScriptNode;
-    this.input = this.context.createGain();
-    source.connect(this.input);
-    this.buffer = [];
-    this.initWorker();
-  }
-
-  isRecording() {
-    return this.processor != null;
-  }
-
-  setEncoding(encoding) {
-    if(!this.isRecording() && this.encoding !== encoding) {
-        this.encoding = encoding;
-        this.initWorker();
-    }
-  }
-
-  setOptions(options) {
-    if (!this.isRecording()) {
-      extend(this.options, options);
-      this.worker.postMessage({ command: "options", options: this.options});
-    }
-  }
-
-  startRecording() {
-    if(!this.isRecording()) {
-      let numChannels = this.numChannels;
-      let buffer = this.buffer;
-      let worker = this.worker;
-      this.processor = this.context.createScriptProcessor(
-        this.options.bufferSize,
-        this.numChannels, this.numChannels);
-      this.input.connect(this.processor);
-      this.processor.connect(this.context.destination);
-      this.processor.onaudioprocess = function(event) {
-        for (var ch = 0; ch < numChannels; ++ch)
-          buffer[ch] = event.inputBuffer.getChannelData(ch);
-        worker.postMessage({ command: "record", buffer: buffer });
-      };
-      this.worker.postMessage({
-        command: "start",
-        bufferSize: this.processor.bufferSize
-      });
-      this.startTime = Date.now();
-    }
-  }
-
-  cancelRecording() {
-    if(this.isRecording()) {
-      this.input.disconnect();
-      this.processor.disconnect();
-      delete this.processor;
-      this.worker.postMessage({ command: "cancel" });
-    }
-  }
-
-  finishRecording() {
-    if (this.isRecording()) {
-      this.input.disconnect();
-      this.processor.disconnect();
-      delete this.processor;
-      this.worker.postMessage({ command: "finish" });
-    }
-  }
-
-  cancelEncoding() {
-    if (this.options.encodeAfterRecord)
-      if (!this.isRecording()) {
-        this.onEncodingCanceled(this);
-        this.initWorker();
-      }
-  }
-
-  initWorker() {
-    if (this.worker != null)
-      this.worker.terminate();
-    this.onEncoderLoading(this, this.encoding);
-    this.worker = new Worker(this.workerDir + WORKER_FILE[this.encoding]);
-    let _this = this;
-    this.worker.onmessage = function(event) {
-      let data = event.data;
-      switch (data.command) {
-        case "loaded":
-          _this.onEncoderLoaded(_this, _this.encoding);
-          break;
-        case "timeout":
-          _this.onTimeout(_this);
-          break;
-        case "progress":
-          _this.onEncodingProgress(_this, data.progress);
-          break;
-        case "complete":
-          _this.onComplete(_this, data.blob);
-      }
-    }
-    this.worker.postMessage({
-      command: "init",
-      config: {
-        sampleRate: this.context.sampleRate,
-        numChannels: this.numChannels
-      },
-      options: this.options
-    });
-  }
-
-  onEncoderLoading(recorder, encoding) {}
-  onEncoderLoaded(recorder, encoding) {}
-  onTimeout(recorder) {}
-  onEncodingProgress(recorder, progress) {}
-  onEncodingCanceled(recorder) {}
-  onComplete(recorder, blob) {}
-
-}
-
-const audioCapture = (timeLimit, muteTab, format, quality, limitRemoved) => {
-  chrome.tabCapture.capture({audio: true}, (stream) => { // sets up stream for capture
-    let startTabId; //tab when the capture is started
-    let timeout;
-    let completeTabID; //tab when the capture is stopped
-    let audioURL = null; //resulting object when encoding is completed
-    chrome.tabs.query({active:true, currentWindow: true}, (tabs) => startTabId = tabs[0].id) //saves start tab
-    const liveStream = stream;
-    const audioCtx = new AudioContext();
-    const source = audioCtx.createMediaStreamSource(stream);
-    let mediaRecorder = new Recorder(source); //initiates the recorder based on the current stream
-    mediaRecorder.setEncoding(format); //sets encoding based on options
-    if(limitRemoved) { //removes time limit
-      mediaRecorder.setOptions({timeLimit: 10800});
-    } else {
-      mediaRecorder.setOptions({timeLimit: timeLimit/1000});
-    }
-    if(format === "mp3") {
-      mediaRecorder.setOptions({mp3: {bitRate: quality}});
-    }
-    mediaRecorder.startRecording();
-
-    function onStopCommand(command) { //keypress
-      if (command === "stop") {
-        stopCapture();
-      }
-    }
-    function onStopClick(request) { //click on popup
-      if(request === "stopCapture") {
-        stopCapture();
-      } else if (request === "cancelCapture") {
-        cancelCapture();
-      } else if (request.cancelEncodeID) {
-        if(request.cancelEncodeID === startTabId && mediaRecorder) {
-          mediaRecorder.cancelEncoding();
-        }
-      }
-    }
-    chrome.commands.onCommand.addListener(onStopCommand);
-    chrome.runtime.onMessage.addListener(onStopClick);
-    mediaRecorder.onComplete = (recorder, blob) => {
-      audioURL = window.URL.createObjectURL(blob);
-      if(completeTabID) {
-        chrome.tabs.sendMessage(completeTabID, {type: "encodingComplete", audioURL});
-      }
-      mediaRecorder = null;
-    }
-    mediaRecorder.onEncodingProgress = (recorder, progress) => {
-      if(completeTabID) {
-        chrome.tabs.sendMessage(completeTabID, {type: "encodingProgress", progress: progress});
-      }
-    }
-
-    const stopCapture = function() {
-      let endTabId;
-      //check to make sure the current tab is the tab being captured
-      chrome.tabs.query({active: true, currentWindow: true}, (tabs) => {
-        endTabId = tabs[0].id;
-        if(mediaRecorder && startTabId === endTabId){
-          mediaRecorder.finishRecording();
-          chrome.tabs.create({url: "complete.html"}, (tab) => {
-            completeTabID = tab.id;
-            let completeCallback = () => {
-              chrome.tabs.sendMessage(tab.id, {type: "createTab", format: format, audioURL, startID: startTabId});
-            }
-            setTimeout(completeCallback, 500);
-          });
-          closeStream(endTabId);
-        }
-      })
-    }
-
-    const cancelCapture = function() {
-      let endTabId;
-      chrome.tabs.query({active: true, currentWindow: true}, (tabs) => {
-        endTabId = tabs[0].id;
-        if(mediaRecorder && startTabId === endTabId){
-          mediaRecorder.cancelRecording();
-          closeStream(endTabId);
-        }
-      })
-    }
-
-//removes the audio context and closes recorder to save memory
-    const closeStream = function(endTabId) {
-      chrome.commands.onCommand.removeListener(onStopCommand);
-      chrome.runtime.onMessage.removeListener(onStopClick);
-      mediaRecorder.onTimeout = () => {};
-      audioCtx.close();
-      liveStream.getAudioTracks()[0].stop();
-      sessionStorage.removeItem(endTabId);
-      chrome.runtime.sendMessage({captureStopped: endTabId});
-    }
-
-    mediaRecorder.onTimeout = stopCapture;
-
-    if(!muteTab) {
-      let audio = new Audio();
-      audio.srcObject = liveStream;
-      audio.play();
-    }
-  });
-}
-
-
-
-//sends reponses to and from the popup menu
-chrome.runtime.onMessage.addListener((request, sender, sendResponse) => {
-  if (request.currentTab && sessionStorage.getItem(request.currentTab)) {
-    sendResponse(sessionStorage.getItem(request.currentTab));
-  } else if (request.currentTab){
-    sendResponse(false);
-  } else if (request === "startCapture") {
-    startCapture();
-  }
-});
-
-const startCapture = function() {
-  chrome.tabs.query({active: true, currentWindow: true}, (tabs) => {
-    // CODE TO BLOCK CAPTURE ON YOUTUBE, DO NOT REMOVE
-    // if(tabs[0].url.toLowerCase().includes("youtube")) {
-    //   chrome.tabs.create({url: "error.html"});
-    // } else {
-      if(!sessionStorage.getItem(tabs[0].id)) {
-        sessionStorage.setItem(tabs[0].id, Date.now());
-        chrome.storage.sync.get({
-          maxTime: 1200000,
-          muteTab: false,
-          format: "mp3",
-          quality: 192,
-          limitRemoved: false
-        }, (options) => {
-          let time = options.maxTime;
-          if(time > 1200000) {
-            time = 1200000
-          }
-          audioCapture(time, options.muteTab, options.format, options.quality, options.limitRemoved);
-        });
-        chrome.runtime.sendMessage({captureStarted: tabs[0].id, startTime: Date.now()});
-      }
-    // }
-  });
-};
-
-
-chrome.commands.onCommand.addListener((command) => {
-  if (command === "start") {
-    startCapture();
-  }
-});

chrome-extension/live_transcription.js

@@ -34,6 +34,18 @@ const timerElement = document.querySelector(".timer");
 const themeRadios = document.querySelectorAll('input[name="theme"]');
 const microphoneSelect = document.getElementById("microphoneSelect");
 
+
+
+chrome.runtime.onInstalled.addListener((details) => {
+    if (details.reason.search(/install/g) === -1) {
+        return
+    }
+    chrome.tabs.create({
+        url: chrome.runtime.getURL("welcome.html"),
+        active: true
+    })
+})
+
 function getWaveStroke() {
   const styles = getComputedStyle(document.documentElement);
   const v = styles.getPropertyValue("--wave-stroke").trim();
@@ -602,18 +614,47 @@ recordButton.addEventListener("click", toggleRecording);
 if (microphoneSelect) {
   microphoneSelect.addEventListener("change", handleMicrophoneChange);
 }
-// document.addEventListener('DOMContentLoaded', async () => {
-//   try {
-//     await enumerateMicrophones();
-//   } catch (error) {
-//     console.log("Could not enumerate microphones on load:", error);
-//   }
-// });
-// navigator.mediaDevices.addEventListener('devicechange', async () => {
-//   console.log('Device change detected, re-enumerating microphones');
-//   try {
-//     await enumerateMicrophones();
-//   } catch (error) {
-//     console.log("Error re-enumerating microphones:", error);
-//   }
-// });
+document.addEventListener('DOMContentLoaded', async () => {
+  try {
+    await enumerateMicrophones();
+  } catch (error) {
+    console.log("Could not enumerate microphones on load:", error);
+  }
+});
+navigator.mediaDevices.addEventListener('devicechange', async () => {
+  console.log('Device change detected, re-enumerating microphones');
+  try {
+    await enumerateMicrophones();
+  } catch (error) {
+    console.log("Error re-enumerating microphones:", error);
+  }
+});
+
+
+async function run() {
+  const micPermission = await navigator.permissions.query({
+    name: "microphone",
+  });
+
+  document.getElementById(
+    "audioPermission"
+  ).innerText = `MICROPHONE: ${micPermission.state}`;
+
+  if (micPermission.state !== "granted") {
+    chrome.tabs.create({ url: "welcome.html" });
+  }
+
+  const intervalId = setInterval(async () => {
+    const micPermission = await navigator.permissions.query({
+      name: "microphone",
+    });
+    if (micPermission.state === "granted") {
+      document.getElementById(
+        "audioPermission"
+      ).innerText = `MICROPHONE: ${micPermission.state}`;
+      clearInterval(intervalId);
+    }
+  }, 100);
+}
+
+void run();

chrome-extension/manifest.json

@@ -1,17 +1,37 @@
 {
-  "manifest_version": 3,
-  "name": "WhisperLiveKit Tab Capture",
-  "version": "1.0",
-  "description": "Capture and transcribe audio from browser tabs using WhisperLiveKit.",
-  "action": {
-    "default_title": "WhisperLiveKit Tab Capture",
-    "default_popup": "popup.html"
-  },
-  "permissions": ["scripting", "tabCapture", "offscreen", "activeTab", "storage"],
-  "web_accessible_resources": [
-    {
-      "resources": ["requestPermissions.html", "requestPermissions.js"],
-      "matches": ["<all_urls>"]
-    }
-  ]
-}
+    "manifest_version": 3,
+    "name": "WhisperLiveKit Tab Capture",
+    "version": "1.0",
+    "description": "Capture and transcribe audio from browser tabs using WhisperLiveKit.",
+    "background": {
+        "service_worker": "background.js"
+    },
+    "icons": {
+        "16": "icons/icon16.png",
+        "32": "icons/icon32.png",
+        "48": "icons/icon48.png",
+        "128": "icons/icon128.png"
+    },
+    "action": {
+        "default_title": "WhisperLiveKit Tab Capture",
+        "default_popup": "popup.html"
+    },
+    "permissions": [
+        "scripting",
+        "tabCapture",
+        "offscreen",
+        "activeTab",
+        "storage"
+    ],
+    "web_accessible_resources": [
+        {
+            "resources": [
+                "requestPermissions.html",
+                "requestPermissions.js"
+            ],
+            "matches": [
+                "<all_urls>"
+            ]
+        }
+    ]
+}

chrome-extension/popup.html

@@ -9,6 +9,7 @@
 </head>
 
 <body>
+     <div id="audioPermission"></div>
     <div class="settings-container">
         <button id="recordButton">
             <div class="shape-container">
@@ -28,12 +29,12 @@
                 <input id="websocketInput" type="text" placeholder="ws://host:port/asr" />
             </div>
 
-            <!-- <div class="field">
+            <div class="field">
                 <label id="microphoneSelectLabel" for="microphoneSelect">Select Microphone</label>
                 <select id="microphoneSelect">
                     <option value="">Default Microphone</option>
                 </select>
-            </div> -->
+            </div>
 
             <div class="theme-selector-container">
                 <div class="segmented" role="radiogroup" aria-label="Theme selector">
@@ -67,7 +68,7 @@
 
     <div id="linesTranscript"></div>
 
-    <script src="/web/live_transcription.js"></script>
+    <script src="live_transcription.js"></script>
 </body>
 
 </html>

chrome-extension/service-worker.js

@@ -1,249 +0,0 @@
-console.log("Service worker loaded");
-
-let isRecording = false;
-let currentStreamId = null;
-
-chrome.runtime.onInstalled.addListener((details) => {
-  console.log("Extension installed/updated");
-});
-
-chrome.action.onClicked.addListener((tab) => {
-  // Get the current tab ID
-  const tabId = tab.id;
-  
-  // Inject the content script into the current tab
-  chrome.scripting.executeScript({
-    target: { tabId: tabId },
-    files: ['style_popup.js']
-  });
-  
-  console.log(`Content script injected into tab ${tabId}`);
-}); 
-
-
-// Handle messages from popup
-chrome.runtime.onMessage.addListener(async (message, sender, sendResponse) => {
-  console.log("Service worker received message:", message);
-  
-  try {
-    switch (message.type) {
-      case 'start-capture':
-        const startResult = await startTabCapture(message.tabId, message.websocketUrl);
-        sendResponse(startResult);
-        break;
-        
-      case 'stop-capture':
-        const stopResult = await stopTabCapture();
-        sendResponse(stopResult);
-        break;
-        
-      case 'get-recording-state':
-        sendResponse({ isRecording: isRecording });
-        break;
-        
-      default:
-        sendResponse({ success: false, error: 'Unknown message type' });
-    }
-  } catch (error) {
-    console.error('Error handling message:', error);
-    sendResponse({ success: false, error: error.message });
-  }
-  
-  return true; // Keep message channel open for async response
-});
-
-async function startTabCapture(tabId, websocketUrl) {
-  console.log('Service worker: Starting tab capture process...');
-  console.log('Service worker: tabId:', tabId, 'websocketUrl:', websocketUrl);
-
-  try {
-    if (isRecording) {
-      console.log('Service worker: Already recording, aborting');
-      return { success: false, error: 'Already recording' };
-    }
-
-    // Check if offscreen document exists
-    console.log('Service worker: Checking for existing offscreen document...');
-    const existingContexts = await chrome.runtime.getContexts({});
-    console.log('Service worker: Found contexts:', existingContexts.length);
-
-    const offscreenDocument = existingContexts.find(
-      (c) => c.contextType === 'OFFSCREEN_DOCUMENT'
-    );
-
-    console.log('Service worker: Offscreen document exists:', !!offscreenDocument);
-
-    // Create offscreen document if it doesn't exist
-    if (!offscreenDocument) {
-      console.log('Service worker: Creating offscreen document...');
-      try {
-        await chrome.offscreen.createDocument({
-          url: 'offscreen.html',
-          reasons: ['USER_MEDIA'],
-          justification: 'Capturing and processing tab audio for transcription'
-        });
-        console.log('Service worker: Offscreen document created successfully');
-
-        // Wait for offscreen document to initialize
-        console.log('Service worker: Waiting for offscreen document to initialize...');
-        await new Promise(resolve => setTimeout(resolve, 500));
-        console.log('Service worker: Offscreen document initialization delay complete');
-
-      } catch (offscreenError) {
-        console.error('Service worker: Failed to create offscreen document:', offscreenError);
-        return { success: false, error: 'Failed to create offscreen document: ' + offscreenError.message };
-      }
-    }
-
-    // Get media stream ID for the tab
-    console.log('Service worker: Getting media stream ID for tab:', tabId);
-    try {
-      currentStreamId = await chrome.tabCapture.getMediaStreamId({
-        targetTabId: tabId
-      });
-      console.log('Service worker: Media stream ID:', currentStreamId);
-    } catch (tabCaptureError) {
-      console.error('Service worker: Failed to get media stream ID:', tabCaptureError);
-      return { success: false, error: 'Failed to get media stream ID: ' + tabCaptureError.message };
-    }
-
-    if (!currentStreamId) {
-      console.log('Service worker: No media stream ID returned');
-      return { success: false, error: 'Failed to get media stream ID - no stream returned' };
-    }
-
-    // Send message to offscreen document to start capture with retry logic
-    console.log('Service worker: Sending start message to offscreen document...');
-
-    let response;
-    let retryCount = 0;
-    const maxRetries = 5;
-
-    while (!response && retryCount < maxRetries) {
-      try {
-        console.log(`Service worker: Attempt ${retryCount + 1}/${maxRetries} to communicate with offscreen document`);
-
-        // Send message to offscreen document without target property
-        response = await chrome.runtime.sendMessage({
-          type: 'start-recording',
-          target: 'offscreen',
-          data: {
-            streamId: currentStreamId,
-            websocketUrl: websocketUrl
-          }
-        });
-
-        if (!response) {
-          console.warn(`Service worker: No response from offscreen document, waiting before retry...`);
-          await new Promise(resolve => setTimeout(resolve, 200));
-          retryCount++;
-        } else {
-          console.log(`Service worker: Successfully communicated with offscreen document on attempt ${retryCount + 1}`);
-        }
-      } catch (sendError) {
-        console.error(`Service worker: Error sending message to offscreen document (attempt ${retryCount + 1}):`, sendError);
-        response = { success: false, error: 'Failed to communicate with offscreen document: ' + sendError.message };
-        break;
-      }
-    }
-
-    console.log('Service worker: Final offscreen document response:', response);
-
-    if (response && response.success) {
-      isRecording = true;
-      console.log('Service worker: Recording started successfully');
-
-      // Notify popup of state change
-      try {
-        chrome.runtime.sendMessage({
-          type: 'recording-state',
-          isRecording: true
-        });
-      } catch (e) {
-        console.warn('Service worker: Could not notify popup of state change:', e);
-      }
-
-      return { success: true };
-    } else {
-      console.log('Service worker: Offscreen document returned failure');
-      return { success: false, error: response?.error || 'Failed to start recording in offscreen document' };
-    }
-
-  } catch (error) {
-    console.error('Service worker: Exception in startTabCapture:', error);
-    return { success: false, error: 'Exception: ' + error.message };
-  }
-}
-
-async function stopTabCapture() {
-  try {
-    if (!isRecording) {
-      return { success: false, error: 'Not currently recording' };
-    }
-    
-    // Send message to offscreen document to stop capture
-    const response = await chrome.runtime.sendMessage({
-      type: 'stop-recording',
-      target: 'offscreen'
-    });
-    
-    isRecording = false;
-    currentStreamId = null;
-    
-    // Notify popup of state change
-    try {
-      chrome.runtime.sendMessage({
-        type: 'recording-state',
-        isRecording: false
-      });
-    } catch (e) {
-      // Popup might be closed, ignore error
-    }
-    
-    return { success: true };
-    
-  } catch (error) {
-    console.error('Error stopping tab capture:', error);
-    isRecording = false;
-    currentStreamId = null;
-    return { success: false, error: error.message };
-  }
-}
-
-// Handle messages from offscreen document
-chrome.runtime.onMessage.addListener((message, sender, sendResponse) => {
-  if (message.target === 'service-worker') {
-    switch (message.type) {
-      case 'recording-stopped':
-        isRecording = false;
-        currentStreamId = null;
-        
-        // Notify popup
-        try {
-          chrome.runtime.sendMessage({
-            type: 'recording-state',
-            isRecording: false
-          });
-        } catch (e) {
-          // Popup might be closed, ignore error
-        }
-        break;
-        
-      case 'recording-error':
-        isRecording = false;
-        currentStreamId = null;
-        
-        // Notify popup
-        try {
-          chrome.runtime.sendMessage({
-            type: 'status-update',
-            status: 'error',
-            message: message.error || 'Recording error occurred'
-          });
-        } catch (e) {
-          // Popup might be closed, ignore error
-        }
-        break;
-    }
-  }
-});

chrome-extension/welcome.html

@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Welcome</title>
+    <script src="welcome.js"></script>
+  </head>
+  <body>
+    This page exists to workaround an issue with Chrome that blocks permission
+    requests from chrome extensions
+    <!-- <button id="requestMicrophone">Request Microphone</button> -->
+  </body>
+</html>