Deduplicate OBS source state traffic

TODO.md

@@ -59,6 +59,10 @@ audio and initial OBS source inventory their own soft gateway budgets, so normal
 or pathological capture cadence cannot rate-limit and disconnect the Companion
 control connection.
 
+Experimental.10 deduplicates OBS source inventories and unchanged source-state
+notifications at both ends, removing the high-volume source-update feedback seen
+with large scene collections while retaining the non-disconnecting safety budget.
+
 Release-blocking work remains:
 
 - Package the native whisper.cpp worker as the Windows CUDA runtime, then benchmark

companion/installer/Lumi.Companion.iss

@@ -1,5 +1,5 @@
 #ifndef AppVersion
-  #define AppVersion "0.1.0-experimental.9"
+  #define AppVersion "0.1.0-experimental.10"
 #endif
 #ifndef SourceRoot
   #error SourceRoot must point at the self-contained Companion publish directory.

companion/scripts/publish-companion.ps1

@@ -1,5 +1,5 @@
 param(
-  [string]$Version = "0.1.0-experimental.9",
+  [string]$Version = "0.1.0-experimental.10",
   [string]$BridgeVersion = "0.1.0-experimental.5"
 )
 

companion/src/Lumi.Companion.App/CompanionRuntime.cs

@@ -564,7 +564,10 @@ public sealed class CompanionRuntime : IAsyncDisposable
                 ReadString(source, "display_name") ?? ReadString(source, "name") ?? "OBS source",
                 ReadBoolean(source, "program_active") || ReadBoolean(source, "active"),
                 ReadBoolean(source, "source_missing") || ReadBoolean(source, "missing")))
-                .Where(source => Guid.TryParse(source.Uuid, out _)).ToArray();
+                .Where(source => Guid.TryParse(source.Uuid, out _))
+                .GroupBy(source => source.Uuid)
+                .Select(group => group.Last())
+                .ToArray();
             _bridgeSelectionAttached = null;
             ObsSourcesChanged?.Invoke(ObsSources);
             foreach (var source in ObsSources) await SendSourceUpdateAsync(source);
@@ -576,6 +579,8 @@ public sealed class CompanionRuntime : IAsyncDisposable
             var source = new ObsSource(ReadString(message, "source_uuid") ?? string.Empty, ReadString(message, "display_name") ?? "OBS source", ReadBoolean(message, "program_active"), ReadBoolean(message, "source_missing"));
             if (Guid.TryParse(source.Uuid, out _))
             {
+                var previous = ObsSources.FirstOrDefault(item => item.Uuid == source.Uuid);
+                if (previous == source) return;
                 ObsSources = ObsSources.Where(item => item.Uuid != source.Uuid).Append(source).OrderBy(item => item.Name).ToArray();
                 ObsSourcesChanged?.Invoke(ObsSources);
                 await SendSourceUpdateAsync(source);

companion/src/Lumi.Companion.App/Lumi.Companion.App.csproj

@@ -5,7 +5,7 @@
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
     <ApplicationManifest>app.manifest</ApplicationManifest>
-    <Version>0.1.0-experimental.9</Version>
+    <Version>0.1.0-experimental.10</Version>
     <AssemblyVersion>0.1.0.0</AssemblyVersion>
   </PropertyGroup>
   <ItemGroup>

plugins/lumi_transcription/backend/companion/gateway.js

@@ -36,6 +36,7 @@ class CompanionGateway {
     let sourceMessagesInWindow = 0;
     let audioMessagesDropped = 0;
     let sourceMessagesDropped = 0;
+    const sourceStates = new Map();
     let messageChain = Promise.resolve();
     const send = (type, payload, sessionId = session?.id || null) => {
       if (socket.readyState === WebSocket.OPEN) socket.send(JSON.stringify(envelope(type, payload, sessionId)));
@@ -65,6 +66,13 @@ class CompanionGateway {
         }
         const message = parseEnvelope(body);
         if (helloComplete && message.type === "source_update") {
+          const sourceId = String(message.payload?.source_uuid || "");
+          const signature = JSON.stringify(message.payload || {});
+          if (sourceId && sourceStates.get(sourceId) === signature) return;
+          if (sourceId) {
+            sourceStates.set(sourceId, signature);
+            if (sourceStates.size > 2048) sourceStates.delete(sourceStates.keys().next().value);
+          }
           sourceMessagesInWindow += 1;
           if (sourceMessagesInWindow > MAX_SOURCE_MESSAGES_PER_SECOND) { sourceMessagesDropped += 1; return; }
         } else {

plugins/lumi_transcription/companion_manifest.json

@@ -1,17 +1,17 @@
 {
   "schema_version": 1,
-  "version": "0.1.0-experimental.9",
+  "version": "0.1.0-experimental.10",
   "signed": false,
-  "release_notes": "Prevents OBS audio and initial source-inventory bursts from rate-limiting the Companion connection by sending steady 20 ms audio frames and bounding high-volume capture traffic separately from control messages.",
+  "release_notes": "Prevents OBS capture bursts from rate-limiting the Companion connection, sends steady 20 ms audio frames, and removes duplicate source-state traffic from large scene collections.",
   "installer": {
     "id": "windows-x64-installer",
     "platform": "win32",
     "architecture": "x64",
     "label": "Windows x64 per-user installer",
     "filename": "Lumi.Companion-Setup.exe",
-    "url": "https://git.rolfsvaag.no/Rolfsvaag_Datateknikk/Lumi/releases/download/companion-v0.1.0-experimental.9/Lumi.Companion-Setup.exe",
+    "url": "https://git.rolfsvaag.no/Rolfsvaag_Datateknikk/Lumi/releases/download/companion-v0.1.0-experimental.10/Lumi.Companion-Setup.exe",
-    "sha256": "22bdb0f351e5b4960e2c1ae40e3bdbd8de8a8d6326b30714defb5eb202c0efcf",
+    "sha256": "8207620c1fa2a3f6371c7f5fad40f9a467146a3c44068ed6ae655ee701d98e6a",
-    "bytes": 32039974
+    "bytes": 32031916
   },
   "artifacts": [
     {
@@ -20,9 +20,9 @@
       "architecture": "x64",
       "label": "Windows x64 self-contained",
       "filename": "Lumi.Companion-win-x64.zip",
-      "url": "https://git.rolfsvaag.no/Rolfsvaag_Datateknikk/Lumi/releases/download/companion-v0.1.0-experimental.9/Lumi.Companion-win-x64.zip",
+      "url": "https://git.rolfsvaag.no/Rolfsvaag_Datateknikk/Lumi/releases/download/companion-v0.1.0-experimental.10/Lumi.Companion-win-x64.zip",
-      "sha256": "70d9a780859824aa7b8a12e9f25ae8871778b83458889237f171484b2a200dbc",
+      "sha256": "f5a00c9bb778790caec596da475c33b3f7c8e6e67921da75e1e8e3b463bee624",
-      "bytes": 41757969,
+      "bytes": 41757850,
       "entrypoint": "Lumi.Companion.App.exe"
     }
   ]

plugins/lumi_transcription/plugin.json

@@ -1,7 +1,7 @@
 {
   "id": "lumi_transcription",
   "name": "Lumi Transcription",
-  "version": "0.1.0-experimental.9",
+  "version": "0.1.0-experimental.10",
   "description": "Server-hosted whisper.cpp transcription for Lumi Companion and OBS closed captions.",
   "main": "index.js",
   "channel": "experimental",

plugins/lumi_transcription/tests/verify.js

@@ -117,6 +117,7 @@ function verifyLocalhostTransportPolicy() {
 }
 
 function verifyCompanionVersionOrdering() {
+  assert.equal(plugin.compareVersions("0.1.0-experimental.10", "0.1.0-experimental.9"), 1);
   assert.equal(plugin.compareVersions("0.1.0-experimental.9", "0.1.0-experimental.8"), 1);
   assert.equal(plugin.compareVersions("0.1.0-experimental.8", "0.1.0-experimental.7"), 1);
   assert.equal(plugin.compareVersions("0.1.0-experimental.7", "0.1.0-experimental.6"), 1);