From 833f3bd158b7e2814eab1e0b3a1b0838caa6bc6b Mon Sep 17 00:00:00 2001
From: locphamtran <tranloclqd@gmail.com>
Date: Mon, 31 Aug 2026 18:43:48 +0700
Subject: [PATCH] V45.30: REVERT V45.29 (a069773) - V45.29 ring worklet 80
 (~426ms) gay latency cao khi preview midi keyboard (ring luon day, do tre =
 dung ring cap) va crackle khi Chord VST2; quay ve V45.28 (4ed1de6): ring 48
 (~256ms), worklet URL v=202608311820, bo log worklet_stats dinh ky.
 v=202608311820

---
 app/static/js/services/bridgeAudioNode.js    | 16 ++--------------
 app/static/js/services/bridgeAudioWorklet.js | 16 +++++++---------
 app/templates/index.html                     |  2 +-
 3 files changed, 10 insertions(+), 24 deletions(-)

diff --git a/app/static/js/services/bridgeAudioNode.js b/app/static/js/services/bridgeAudioNode.js
index 5b168cc..503f71d 100644
--- a/app/static/js/services/bridgeAudioNode.js
+++ b/app/static/js/services/bridgeAudioNode.js
@@ -17,7 +17,6 @@
   var _initialized = false;
   var _useWorklet = false;
   var _workletStats = null; // stats tu worklet (overrun/underrun) — getDiag
-  var _statsLogAccum = 0;    // dem stats messages — log dbg dinh ky (V45.29)
   var _dest = null; // destination gain node da noi (chong connect trung)
 
   function _getCtx() {
@@ -33,7 +32,7 @@
       console.warn('[BridgeAudioNode] AudioWorklet unavailable — ScriptProcessor fallback');
       return false;
     }
-    var url = '/static/js/services/bridgeAudioWorklet.js?v=202608311832';
+    var url = '/static/js/services/bridgeAudioWorklet.js?v=202608311820';
     _ctx.audioWorklet.addModule(url).then(function () {
       if (!_initialized) return; // disconnect() happened while loading
       if (_useWorklet) return;   // already set up (init retry)
@@ -45,18 +44,7 @@
         });
         _workletNode.connect(_gainNode);
         _workletNode.port.onmessage = function (ev) {
-          if (ev.data && ev.data.type === 'stats') {
-            _workletStats = ev.data;
-            // V45.29: log dinh ky worklet_stats (moi ~2s) — preview_diag chi
-            // fire khi bam keybed/vkb, duong preview khac khong log ws= duoc.
-            try {
-              _statsLogAccum++;
-              if (_statsLogAccum >= 4) {
-                _statsLogAccum = 0;
-                if (window.__dbgLog) window.__dbgLog('worklet_stats', 'ov=' + ev.data.overruns + ' un=' + ev.data.underruns + ' ring=' + ev.data.ring + ' max=' + ev.data.max);
-              }
-            } catch (e) {}
-          }
+          if (ev.data && ev.data.type === 'stats') _workletStats = ev.data;
         };
         _useWorklet = true;
         // drain pre-buffer into worklet (order preserved)
diff --git a/app/static/js/services/bridgeAudioWorklet.js b/app/static/js/services/bridgeAudioWorklet.js
index 8491d42..4e22d34 100644
--- a/app/static/js/services/bridgeAudioWorklet.js
+++ b/app/static/js/services/bridgeAudioWorklet.js
@@ -1,13 +1,11 @@
 // app/static/js/services/bridgeAudioWorklet.js
 // VSTi crackle fix: audio sink chay tren audio thread (khong jank main thread).
-// - Ring block 256 mau, toi da 80 block (~426ms @48k) — hap thu jitter pump
-//   (V45.29: 48->80 theo log thuc te: render loop C++ stall toi ~361ms —
-//   fxrt_bridge loopMax=361ms, fxrt_pump pump_gap 362ms, longtask d=346 —
-//   ring 48 (256ms) van khong du -> underrun lap lai -> wobble chord van con.
-//   Lich su: 8->16 (V45) dung tremolo crackle, 16->32 (V45.27) dung crackle,
-//   32->48 (V45.28) chua du stall chord, 48->80 (V45.29) phu stall ~426ms).
-//   Flush o play start (app.jsx) xoa ring nen do tre khong tang: ring thuong
-//   can o preview.
+// - Ring block 256 mau, toi da 48 block (~256ms @48k) — hap thu jitter pump
+//   (V45.28: 32->48 de dung wobble VST2 loop/tremolo khi nhan chord — chord
+//   nhieu voice -> render loop C++ stall dai hon ~170ms -> underrun lap lai
+//   (fade ve 0) nghe nhu wobble; 8->16 (V45) dung tremolo crackle, 16->32
+//   (V45.27) dung crackle, 32 van chua du cho stall chord). Flush o play
+//   start (app.jsx) xoa ring nen do tre khong tang: ring thuong can o preview.
 // - Underrun: fade ve 0 thay vi click (hard silence).
 // - Resume sau silence: fade vao tu 0.
 // - Overrun: drop block cu nhat + crossfade tich luy — moi block drop cong
@@ -19,7 +17,7 @@ class BridgeAudioSinkProcessor extends AudioWorkletProcessor {
   constructor() {
     super();
     this._ring = [];
-    this._MAX = 80;
+    this._MAX = 48;
     this._gain = 1.0;
     this._lastOutL = 0.0;
     this._lastOutR = 0.0;
diff --git a/app/templates/index.html b/app/templates/index.html
index 4011a33..8d3cc38 100644
--- a/app/templates/index.html
+++ b/app/templates/index.html
@@ -40,7 +40,7 @@
     <script src="/static/js/services/soundfontStorage.js?v=202608290945"></script>
     <script src="/static/js/services/soundfontPlayer.js?v=202608290945"></script>
     <script src="/static/js/services/nativeBridgeService.js?v=202608291510"></script>
-    <script src="/static/js/services/bridgeAudioNode.js?v=202608311832"></script>
+    <script src="/static/js/services/bridgeAudioNode.js?v=202608311820"></script>
     <script src="/static/js/services/unifiedMidiRouter.js?v=202608311756"></script>
     <script src="/static/js/services/audioRoutingEngine.js?v=202608290945"></script>
     <script src="/static/js/services/aiGateway.js?v=202608290945"></script>