added platform checks and error handling when virtmic is not present

src/renderer/patches/screenShareAudio.ts

@@ -1,3 +1,5 @@
+import { isLinux } from "../utils";
+if (isLinux) {
     const original = navigator.mediaDevices.getDisplayMedia;
     async function getVirtmic() {
         const getAudioDevice = async (deviceName: string|undefined) => {;
@@ -14,14 +16,14 @@ async function getVirtmic() {
             id = myDiscordAudioSink?.deviceId;
         }
         catch (error) {
-        id = 'default';
+            id = 'error';
         }
     return id;
     };
     navigator.mediaDevices.getDisplayMedia = async function() {
         const id = await getVirtmic();
         const stream = await original.apply(this);
-
+        if (id !== 'error'){
             const audio = await navigator.mediaDevices.getUserMedia({ 
                 audio: { 
                     deviceId: {
@@ -30,7 +32,14 @@ navigator.mediaDevices.getDisplayMedia = async function() {
                     autoGainControl: false,
                     echoCancellation: false,
                     noiseSuppression: false
-   } });
-  audio.getAudioTracks().forEach(t => stream.addTrack(t));
-  return stream;
                 } 
+            });
+            audio.getAudioTracks().forEach(t => stream.addTrack(t));
+        } else {
+            const audio = await navigator.mediaDevices.getUserMedia({ audio: false });
+        
+        };
+        
+        return stream;
+    };
+};

src/renderer/utils.ts

@@ -17,3 +17,4 @@ const { platform } = navigator;
 
 export const isWindows = platform.startsWith("Win");
 export const isMac = platform.startsWith("Mac");
+export const isLinux = platform.startsWith("Linux");