fix: MIDI keyboard preview silent after transport STOP — live flag bypass guard (V8)

app/static/js/app.jsx

@@ -9457,7 +9457,7 @@ const PianoRollTabEditor = ({ st, zoom, bpm, viewportWidth, activeTracks, onClos
               }
               if (window.SonicMidiRouter && window.SonicMidiRouter.isBridgeActive()) {
                 try { if (window.__ensureBridgeProgram) window.__ensureBridgeProgram(kbTrk ? kbTrk.id : 0, kbCtx.program, kbCtx.synthEngine); } catch (er) {}
-                window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_ON', channel: kbTrk ? kbTrk.id : 0, pitch: pitch, velocity: 100 / 127, percussion: !!(kbCtx && kbCtx.synthEngine && kbCtx.synthEngine.soundfont_bank === 128) });
+                window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_ON', channel: kbTrk ? kbTrk.id : 0, pitch: pitch, velocity: 100 / 127, percussion: !!(kbCtx && kbCtx.synthEngine && kbCtx.synthEngine.soundfont_bank === 128), live: true });
               } else if (window.SonicSF && !kbNative) {
                 // ⚠️ FIX: giữ note theo thời gian bấm phím — durationMs lớn (5s)
                 // chỉ là auto-off phòng hờ; mouseup/mouseleave gọi stopNote dừng
@@ -9485,7 +9485,7 @@ const PianoRollTabEditor = ({ st, zoom, bpm, viewportWidth, activeTracks, onClos
                 }
                 if (window.SonicMidiRouter && window.SonicMidiRouter.isBridgeActive()) {
                   try { if (window.__ensureBridgeProgram) window.__ensureBridgeProgram(kbTrk ? kbTrk.id : 0, kbCtx.program, kbCtx.synthEngine); } catch (er) {}
-                  window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_ON', channel: kbTrk ? kbTrk.id : 0, pitch: pitch, velocity: 100 / 127, percussion: !!(kbCtx && kbCtx.synthEngine && kbCtx.synthEngine.soundfont_bank === 128) });
+                  window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_ON', channel: kbTrk ? kbTrk.id : 0, pitch: pitch, velocity: 100 / 127, percussion: !!(kbCtx && kbCtx.synthEngine && kbCtx.synthEngine.soundfont_bank === 128), live: true });
                 } else if (window.SonicSF && !(isStandaloneSf() && isSfTrackEngine(kbCtx.synthEngine) && !shouldRouteCarla(kbCtx.synthEngine))) {
                   // giữ note khi kéo qua phím (mouse enter) — dừng bằng mouseup/leave
                   window.SonicSF.playNote(pitch, 100, 5000, undefined, kbCtx.program, null, kbCtx.ch, kbCtx.synthEngine);
@@ -9504,7 +9504,7 @@ const PianoRollTabEditor = ({ st, zoom, bpm, viewportWidth, activeTracks, onClos
             try {
               if (isStandaloneSf()) stopNativeSfNote('kb_' + st.trackId + '_' + pitch);
               if (window.SonicMidiRouter && window.SonicMidiRouter.isBridgeActive()) {
-                window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_OFF', channel: kbTrk ? kbTrk.id : 0, pitch: pitch, velocity: 0, percussion: !!(kbCtx && kbCtx.synthEngine && kbCtx.synthEngine.soundfont_bank === 128) });
+                window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_OFF', channel: kbTrk ? kbTrk.id : 0, pitch: pitch, velocity: 0, percussion: !!(kbCtx && kbCtx.synthEngine && kbCtx.synthEngine.soundfont_bank === 128), live: true });
               } else if (window.SonicSF && window.SonicSF.stopNote) window.SonicSF.stopNote(kbCtx.ch, pitch);
             } catch (e) {}
             if (window.__carlaKeybedTimer) { clearTimeout(window.__carlaKeybedTimer); window.__carlaKeybedTimer = null; }
@@ -9516,7 +9516,7 @@ const PianoRollTabEditor = ({ st, zoom, bpm, viewportWidth, activeTracks, onClos
             try {
               if (isStandaloneSf()) stopNativeSfNote('kb_' + st.trackId + '_' + pitch);
               if (window.SonicMidiRouter && window.SonicMidiRouter.isBridgeActive()) {
-                window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_OFF', channel: kbTrk ? kbTrk.id : 0, pitch: pitch, velocity: 0, percussion: !!(kbCtx && kbCtx.synthEngine && kbCtx.synthEngine.soundfont_bank === 128) });
+                window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_OFF', channel: kbTrk ? kbTrk.id : 0, pitch: pitch, velocity: 0, percussion: !!(kbCtx && kbCtx.synthEngine && kbCtx.synthEngine.soundfont_bank === 128), live: true });
               } else if (window.SonicSF && window.SonicSF.stopNote) window.SonicSF.stopNote(kbCtx.ch, pitch);
             } catch (e) {}
             if (window.SonicCarlaMidi) { try { window.SonicCarlaMidi.noteOff(kbCtx.ch, pitch); } catch (e) {} }
@@ -15828,7 +15828,7 @@ const App = () => {
                       try {
                         heldMidiNotesRef.current[bt.id] = (heldMidiNotesRef.current[bt.id] || 0) + 1;
                       } catch (err) {}
-                      try { window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_ON', channel: bt.id, pitch: pitch, velocity: scaledVel / 127, percussion: !!(bt.synth_engine && bt.synth_engine.soundfont_bank === 128) }); } catch (e) {}
+                      try { window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_ON', channel: bt.id, pitch: pitch, velocity: scaledVel / 127, percussion: !!(bt.synth_engine && bt.synth_engine.soundfont_bank === 128), live: true }); } catch (e) {}
                     });
                   } else if (window.SonicSF) {
                      var allTracks = activeTracksRef.current || [];
@@ -15911,7 +15911,7 @@ const App = () => {
                          }
                        }
                      } catch (err) {}
-                     try { window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_OFF', channel: bst.id, pitch: pitch, velocity: 0, percussion: !!(bst.synth_engine && bst.synth_engine.soundfont_bank === 128) }); } catch (e) {}
+                     try { window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_OFF', channel: bst.id, pitch: pitch, velocity: 0, percussion: !!(bst.synth_engine && bst.synth_engine.soundfont_bank === 128), live: true }); } catch (e) {}
                    });
                  } else if (window.SonicSF && window.SonicSF.stopNote) {
                    var stopTracks = activeTracksRef.current || [];
@@ -21853,9 +21853,9 @@ const App = () => {
       const isPerc = !!(track && track.synth_engine && track.synth_engine.soundfont_bank === 128);
       const tch = track ? track.id : 0;
       try { if (window.__ensureBridgeProgram) window.__ensureBridgeProgram(tch, program, track && track.synth_engine); } catch (e) {}
-      try { window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_ON', channel: tch, pitch: pitch || 60, velocity: velocity, percussion: isPerc }); } catch (e) {}
+      try { window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_ON', channel: tch, pitch: pitch || 60, velocity: velocity, percussion: isPerc, live: true }); } catch (e) {}
       setTimeout(function () {
-        try { window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_OFF', channel: tch, pitch: pitch || 60, velocity: 0, percussion: isPerc }); } catch (e) {}
+        try { window.SonicMidiRouter.pushEvent({ cmd: 'NOTE_OFF', channel: tch, pitch: pitch || 60, velocity: 0, percussion: isPerc, live: true }); } catch (e) {}
       }, (durationMs || 500) + 30);
       return;
     }

app/static/js/services/nativeBridgeService.js

@@ -110,7 +110,7 @@
      * velocity 0..1; sampleOffset in samples within the current audio block.
      * data2/data3 (A12): CC value / program / PB LSB|MSB.
      */
-    dispatchMidiEvent: function (cmd, channel, pitch, velocity, sampleOffset, data2, data3) {
+    dispatchMidiEvent: function (cmd, channel, pitch, velocity, sampleOffset, data2, data3, live) {
       if (!this._tauri()) return false;
       var safeVelocity = Math.floor(Math.min(1.0, Math.max(0.0, velocity)) * 127);
       var byteCmd;
@@ -127,7 +127,8 @@
         velocity: safeVelocity,
         data2: data2 === undefined ? 0 : data2,
         data3: data3 === undefined ? 0 : data3,
-        sampleOffset: sampleOffset || 0
+        sampleOffset: sampleOffset || 0,
+        live: !!live
       }).catch(function (e) { console.warn('[BridgeService] push_midi_event:', e); });
       return true;
     },

app/static/js/services/unifiedMidiRouter.js

@@ -54,7 +54,7 @@
       if (typeof ch === 'string') ch = this.allocateChannel(ch, opts.percussion);
       if (ch === undefined || ch === null) ch = 0;
       if (this.isBridgeActive()) {
-        window.NativeBridgeService.dispatchMidiEvent(cmd, ch, pitch, vel, sampleOffset, opts.data2, opts.data3);
+        window.NativeBridgeService.dispatchMidiEvent(cmd, ch, pitch, vel, sampleOffset, opts.data2, opts.data3, opts.live);
         return;
       }
       if (this.onFallback) this.onFallback(cmd, ch, pitch, vel);

native_bridge/include/SharedMemoryIPC.h

@@ -32,7 +32,7 @@ struct SharedAudioBufferIPC {
         uint8_t velocity;     // 0-127 (0x9 + vel=0 == note off)
         uint8_t data2;        // CC value / program number / PB LSB
         uint8_t data3;        // PB MSB (0xE only)
-        uint8_t reserved[2];  // explicit padding — keeps C/Rust layout stable
+        uint8_t reserved[2];  // reserved[0]: live flag (1 = live input, bypass transportStopped guard); reserved[1]: 0 — keeps C/Rust layout stable
         uint32_t sampleOffset;
     } midiQueue[64];
 

native_bridge/src/main.cpp

@@ -722,7 +722,7 @@ int main(int argc, char* argv[]) {
                 // truoc segment chua no (A11 splitting), nen offset tuong doi la 0.
                 // Truyen offset tuyet doi truoc day lam sfizz/VST3 trigger tre.
                 if (evt.velocity > 0) {
-                    if (transportStopped) return; // V8 bug 3: drop note-on sau STOP
+                    if (transportStopped && !evt.reserved[0]) return; // V8 bug 3: drop note-on sau STOP, tru live input (reserved[0])
                     instruments.noteOn(evt.channel, evt.pitch, evt.velocity / 127.0f);
                 } else
                     instruments.noteOff(evt.channel, evt.pitch);
@@ -735,7 +735,7 @@ int main(int argc, char* argv[]) {
                 // gui CC64 xuong sau STOP (note-on/CC timer tre); VSTi giu
                 // note khi pedal down -> am treo loop. CC64=0 (sustain-up)
                 // van cho qua.
-                if (transportStopped && evt.pitch == 64 && evt.data2 > 0) return;
+                if (transportStopped && evt.pitch == 64 && evt.data2 > 0 && !evt.reserved[0]) return;
                 instruments.controlChange(evt.channel, evt.pitch, evt.data2);
                 break;
             case 0xC: // program change: program in data2
@@ -1007,6 +1007,7 @@ int main(int argc, char* argv[]) {
                 for (uint32_t y : samePathSilenced)
                     unmute_if_not_closing(y, "openGUI");
                 if (ok) {
+
                     disable_ime_contexts((HWND)hwnd);
 
                     std::cout << "[NativeBridge] GUI attached hwnd=" << hwnd

src-tauri/src/lib.rs

@@ -667,11 +667,12 @@ fn push_midi_event(
     data2: u8,
     data3: u8,
     sample_offset: u32,
+    live: bool,
 ) -> Result<(), String> {
     let state = app.state::<ShmState>();
     let guard = state.0.lock().map_err(|e| e.to_string())?;
     let shm = guard.as_ref().ok_or("bridge shm unavailable")?;
-    shm.push_midi(command, channel, pitch, velocity, data2, data3, sample_offset)
+    shm.push_midi(command, channel, pitch, velocity, data2, data3, sample_offset, live as u8)
         .then_some(())
         .ok_or_else(|| "midi queue full".to_string())
 }

src-tauri/src/shm.rs

@@ -34,7 +34,7 @@ pub struct MidiEventIPC {
     pub velocity: u8,
     pub data2: u8, // CC value / program / PB LSB
     pub data3: u8, // PB MSB (0xE only)
-    pub reserved: [u8; 2],
+    pub reserved: [u8; 2], // reserved[0]: live flag (1=live input, bypass transportStopped guard); reserved[1]: 0
     pub sample_offset: u32,
 }
 
@@ -112,7 +112,7 @@ impl Shm {
         unsafe { &mut *self.view }
     }
 
-    pub fn push_midi(&self, cmd: u8, channel: u8, pitch: u8, velocity: u8, data2: u8, data3: u8, sample_offset: u32) -> bool {
+    pub fn push_midi(&self, cmd: u8, channel: u8, pitch: u8, velocity: u8, data2: u8, data3: u8, sample_offset: u32, live: u8) -> bool {
         let ipc = self.ipc();
         if ipc.midi_queue_count as usize >= MIDI_QUEUE_CAP {
             return false;
@@ -125,7 +125,7 @@ impl Shm {
             velocity,
             data2,
             data3,
-            reserved: [0u8; 2],
+            reserved: [live, 0u8],
             sample_offset,
         };
         ipc.midi_queue_count += 1;