added platform checks and error handling when virtmic is not present

src/renderer/patches/screenShareAudio.ts

@@ -1,5 +1,7 @@
-const original = navigator.mediaDevices.getDisplayMedia;
+import { isLinux } from "../utils";
-async function getVirtmic() {
+if (isLinux) {
+    const original = navigator.mediaDevices.getDisplayMedia;
+    async function getVirtmic() {
         const getAudioDevice = async (deviceName: string|undefined) => {;
             let devices = await navigator.mediaDevices.enumerateDevices();
             let audioDevice = devices.find(({
@@ -14,14 +16,14 @@ async function getVirtmic() {
             id = myDiscordAudioSink?.deviceId;
         }
         catch (error) {
-        id = 'default';
+            id = 'error';
         }
-return id;
+    return id;
-};
+    };
-navigator.mediaDevices.getDisplayMedia = async function() {
+    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));
+        } 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");