From a069773d4a03dab518a1ab0777fe990c554fdf29 Mon Sep 17 00:00:00 2001
From: locphamtran <tranloclqd@gmail.com>
Date: Mon, 31 Aug 2026 18:32:37 +0700
Subject: [PATCH] V45.29: fix wobble preview VST2 chord van con sau V45.28 -
 ring worklet bridgeAudioWorklet 48->80 block (~426ms) phu stall render loop
 C++ toi ~361ms do tu log (fxrt_bridge loopMax=361ms, fxrt_pump pump_gap
 362ms, longtask d=346): ring 48 (256ms) van khong du -> underrun lap lai fade
 ve 0 = wobble; them worklet_stats log dinh ky moi ~2s vao dbg.log
 (preview_diag chi fire keybed/vkb, duong preview khac khong log ws= duoc) de
 xac minh ov/un sau fix. v=202608311832

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

diff --git a/app/static/js/services/bridgeAudioNode.js b/app/static/js/services/bridgeAudioNode.js
index 503f71d..5b168cc 100644
--- a/app/static/js/services/bridgeAudioNode.js
+++ b/app/static/js/services/bridgeAudioNode.js
@@ -17,6 +17,7 @@
   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() {
@@ -32,7 +33,7 @@
       console.warn('[BridgeAudioNode] AudioWorklet unavailable — ScriptProcessor fallback');
       return false;
     }
-    var url = '/static/js/services/bridgeAudioWorklet.js?v=202608311820';
+    var url = '/static/js/services/bridgeAudioWorklet.js?v=202608311832';
     _ctx.audioWorklet.addModule(url).then(function () {
       if (!_initialized) return; // disconnect() happened while loading
       if (_useWorklet) return;   // already set up (init retry)
@@ -44,7 +45,18 @@
         });
         _workletNode.connect(_gainNode);
         _workletNode.port.onmessage = function (ev) {
-          if (ev.data && ev.data.type === 'stats') _workletStats = ev.data;
+          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) {}
+          }
         };
         _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 4e22d34..8491d42 100644
--- a/app/static/js/services/bridgeAudioWorklet.js
+++ b/app/static/js/services/bridgeAudioWorklet.js
@@ -1,11 +1,13 @@
 // 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 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.
+// - 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.
 // - 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
@@ -17,7 +19,7 @@ class BridgeAudioSinkProcessor extends AudioWorkletProcessor {
   constructor() {
     super();
     this._ring = [];
-    this._MAX = 48;
+    this._MAX = 80;
     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 8d3cc38..4011a33 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=202608311820"></script>
+    <script src="/static/js/services/bridgeAudioNode.js?v=202608311832"></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>