wip walkthrough 2 bridge: jobEvent_/MsgWaitForMultipleObjects pump, SetThreadPriority + PowerThrottling, isBypassed silence quanh assign/unload, closeGUI view->removed(), reloadForGUI reuse instance, bo mute khi GUI mo, CoInitializeEx MTA — CHƯA verified: driver test 1/3 PASS (AV c0000005 Nexus!GetPluginFactory luc attachView ch5, nghi MTA/bo mute), exe deploy giu ban 0cec3d3 (28104a47)

native_bridge/src/NativeInstrumentEngine.cpp

@@ -13,6 +13,8 @@
 #include <cctype>
 #include <cstring>
 #include <iostream>
+#include <thread>
+#include <chrono>
 
 // -----------------------------------------------------------------
 // 1. SOUNDFONT ENGINE (.SF2 / .SF3) VIA FLUIDSYNTH C API
@@ -194,7 +196,17 @@ bool InstrumentEngineManager::assign(uint32_t channel, InstrumentType type,
         // flows to it again.
         reloadingCh_[channel] = false;
     }
-    oldInst.reset();
+    if (oldInst) {
+        isBypassed_.store(true);
+        std::this_thread::sleep_for(std::chrono::milliseconds(10));
+        try {
+            oldInst.reset();
+        } catch (...) {
+            isBypassed_.store(false);
+            throw;
+        }
+        isBypassed_.store(false);
+    }
     return true;
 }
 
@@ -211,7 +223,17 @@ void InstrumentEngineManager::unload(uint32_t channel) {
         paths_.erase(channel);
         reloadingCh_[channel] = false;
     }
-    oldInst.reset();
+    if (oldInst) {
+        isBypassed_.store(true);
+        std::this_thread::sleep_for(std::chrono::milliseconds(10));
+        try {
+            oldInst.reset();
+        } catch (...) {
+            isBypassed_.store(false);
+            throw;
+        }
+        isBypassed_.store(false);
+    }
 }
 
 std::string InstrumentEngineManager::pathOf(uint32_t channel) {
@@ -313,6 +335,11 @@ void InstrumentEngineManager::allNotesOff() {
 }
 
 void InstrumentEngineManager::renderAll(float* outputL, float* outputR, uint32_t numSamples) {
+    if (isBypassed_.load()) {
+        std::memset(outputL, 0, numSamples * sizeof(float));
+        std::memset(outputR, 0, numSamples * sizeof(float));
+        return;
+    }
     std::lock_guard<std::mutex> lock(mu_);
     std::memset(outputL, 0, numSamples * sizeof(float));
     std::memset(outputR, 0, numSamples * sizeof(float));