From 998a9f94041945683b4aad40c94ccef447bee592 Mon Sep 17 00:00:00 2001
From: Raja Subramanian <raja.gobi@tutanota.com>
Date: Thu, 28 Aug 2025 14:47:57 +0530
Subject: [PATCH] Switch known rids from 012 -> 210, used by OBS. (#3882)

* Switch known rids from 012 -> 210, used by OBS.

* static check
---
 pkg/sfu/buffer/videolayerutils.go      | 10 +++++-----
 pkg/sfu/buffer/videolayerutils_test.go | 16 ++++++++--------
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/pkg/sfu/buffer/videolayerutils.go b/pkg/sfu/buffer/videolayerutils.go
index e4b923744..5045c6d08 100644
--- a/pkg/sfu/buffer/videolayerutils.go
+++ b/pkg/sfu/buffer/videolayerutils.go
@@ -27,16 +27,16 @@ const (
 	halfResolutionH    = "h"
 	fullResolutionF    = "f"
 
-	quarterResolution0 = "0"
+	quarterResolution2 = "2"
 	halfResolution1    = "1"
-	fullResolution2    = "2"
+	fullResolution0    = "0"
 )
 
 type VideoLayersRid [DefaultMaxLayerSpatial + 1]string
 
 var (
 	videoLayersRidQHF     = VideoLayersRid{quarterResolutionQ, halfResolutionH, fullResolutionF}
-	videoLayersRid012     = VideoLayersRid{quarterResolution0, halfResolution1, fullResolution2}
+	videoLayersRid210     = VideoLayersRid{quarterResolution2, halfResolution1, fullResolution0}
 	DefaultVideoLayersRid = videoLayersRidQHF
 )
 
@@ -511,8 +511,8 @@ func NormalizeVideoLayersRid(rids VideoLayersRid) VideoLayersRid {
 		normalize(videoLayersRidQHF)
 	}
 
-	if isVideoLayersRidKnown(rids, videoLayersRid012) {
-		normalize(videoLayersRid012)
+	if isVideoLayersRidKnown(rids, videoLayersRid210) {
+		normalize(videoLayersRid210)
 	}
 
 	return out
diff --git a/pkg/sfu/buffer/videolayerutils_test.go b/pkg/sfu/buffer/videolayerutils_test.go
index 357234e25..a7c5ad26d 100644
--- a/pkg/sfu/buffer/videolayerutils_test.go
+++ b/pkg/sfu/buffer/videolayerutils_test.go
@@ -867,19 +867,19 @@ func TestNormalizeVideoLayersRid(t *testing.T) {
 			VideoLayersRid{"q", "h", ""},
 		},
 		{
-			"012",
-			videoLayersRid012,
-			videoLayersRid012,
+			"210",
+			videoLayersRid210,
+			videoLayersRid210,
 		},
 		{
-			"scrambled 012",
+			"scrambled 210",
 			VideoLayersRid{"2", "0", "1"},
-			videoLayersRid012,
+			videoLayersRid210,
 		},
 		{
-			"partial 012",
-			VideoLayersRid{"2", "1"},
-			VideoLayersRid{"1", "2", ""},
+			"partial 210",
+			VideoLayersRid{"1", "2"},
+			VideoLayersRid{"2", "1", ""},
 		},
 	}