From d372a6d165bbc976f1ec1a7ce99c05c3a012cf2e Mon Sep 17 00:00:00 2001
From: creations <creations@creations.works>
Date: Wed, 24 Dec 2025 09:24:32 -0500
Subject: [PATCH] fix virtual camera support (#1215)

Co-authored-by: V <vendicated@riseup.net>
---
 ...oGainToggle.ts => fixStreamConstraints.ts} | 39 +++++++++++++------
 1 file changed, 27 insertions(+), 12 deletions(-)
 rename src/renderer/patches/{fixAutoGainToggle.ts => fixStreamConstraints.ts} (53%)

diff --git a/src/renderer/patches/fixAutoGainToggle.ts b/src/renderer/patches/fixStreamConstraints.ts
similarity index 53%
rename from src/renderer/patches/fixAutoGainToggle.ts
rename to src/renderer/patches/fixStreamConstraints.ts
index e23c737..3f03246 100644
--- a/src/renderer/patches/fixAutoGainToggle.ts
+++ b/src/renderer/patches/fixStreamConstraints.ts
@@ -7,33 +7,45 @@
 import { Logger } from "@vencord/types/utils";
 import { MediaEngineStore } from "renderer/common";
 
-const logger = new Logger("FixAutoGain");
+const logger = new Logger("VesktopStreamFixes");
 
-function fixTrackConstraints(constraint: MediaTrackConstraints) {
+function fixAudioTrackConstraints(constraint: MediaTrackConstraints) {
     const target = constraint.advanced?.find(opt => Object.hasOwn(opt, "autoGainControl")) ?? constraint;
 
     target.autoGainControl = MediaEngineStore.getAutomaticGainControl();
 }
 
-function fixStreamConstraints(constraints: MediaStreamConstraints | undefined) {
-    if (!constraints?.audio) return;
+function fixVideoTrackConstraints(constraint: MediaTrackConstraints) {
+    if (typeof constraint.deviceId === "string" && constraint.deviceId !== "default") {
+        constraint.deviceId = { exact: constraint.deviceId };
+    }
+}
 
-    if (typeof constraints.audio !== "object") {
-        constraints.audio = {};
+function fixStreamConstraints(constraints: MediaStreamConstraints | undefined) {
+    if (!constraints) return;
+
+    if (constraints.audio) {
+        if (typeof constraints.audio !== "object") {
+            constraints.audio = {};
+        }
+        fixAudioTrackConstraints(constraints.audio);
     }
 
-    fixTrackConstraints(constraints.audio);
+    if (constraints.video) {
+        if (typeof constraints.video !== "object") {
+            constraints.video = {};
+        }
+        fixVideoTrackConstraints(constraints.video);
+    }
 }
 
 const originalGetUserMedia = navigator.mediaDevices.getUserMedia;
 navigator.mediaDevices.getUserMedia = function (constraints) {
     try {
         fixStreamConstraints(constraints);
-        logger.debug("Fixed getUserMedia constraints", constraints);
     } catch (e) {
         logger.error("Failed to fix getUserMedia constraints", e);
     }
-
     return originalGetUserMedia.call(this, constraints);
 };
 
@@ -41,10 +53,13 @@ const originalApplyConstraints = MediaStreamTrack.prototype.applyConstraints;
 MediaStreamTrack.prototype.applyConstraints = function (constraints) {
     if (constraints) {
         try {
-            fixTrackConstraints(constraints);
-            logger.debug("Fixed applyConstraints constraints", constraints);
+            if (this.kind === "audio") {
+                fixAudioTrackConstraints(constraints);
+            } else if (this.kind === "video") {
+                fixVideoTrackConstraints(constraints);
+            }
         } catch (e) {
-            logger.error("Failed to fix applyConstraints constraints", e);
+            logger.error("Failed to fix constraints", e);
         }
     }
     return originalApplyConstraints.call(this, constraints);