Correct bypass handling in snapshots.

src/PiPedalModel.cpp

@@ -671,6 +671,17 @@ void PiPedalModel::SetPedalboardItemEnable(int64_t clientId, int64_t pedalItemId
     std::lock_guard<std::recursive_mutex> guard{mutex};
     {
         this->pedalboard.SetItemEnabled(pedalItemId, enabled);
+        PedalboardItem * pPedalboardItem = this->pedalboard.GetItem(pedalItemId);
+        if (pPedalboardItem) {
+            Lv2PluginInfo::ptr pluginInfo = GetPluginInfo(pPedalboardItem->uri());
+            if (pluginInfo) {
+                for (auto &port: pluginInfo->ports()) {
+                    if (port->is_bypass()) {
+                        pPedalboardItem->SetControlValue(port->symbol(), enabled? 1.0: 0.0f);
+                    }
+                }
+            } 
+        }
 
         // Notify clients.
         std::vector<IPiPedalModelSubscriber::ptr> t{subscribers.begin(), subscribers.end()};

src/PluginHost.cpp

@@ -2246,6 +2246,19 @@ bool Lv2PluginInfo::WantsWorkerThread() const
 {
     return contains(this->required_features_, LV2_WORKER__schedule) || contains(this->supported_features_, LV2_WORKER__schedule);
 }
+
+uint32_t Lv2PluginInfo::getBypassPortIndex() const
+{
+    for (const auto &port : ports_)
+    {
+        if (port->is_bypass())
+        {
+            return port->index();
+        }
+    }
+    return (uint32_t)-1;
+}
+
 // void PiPedalHostLogError(const std::string &error)
 // {
 //     Lv2Log::error("%s",error.c_str());

src/PluginHost.hpp

@@ -527,6 +527,7 @@ namespace pipedal
             }
         }
         bool IsPathProperty(const std::string &uri) const;
+        uint32_t getBypassPortIndex() const;
 
     public:
         virtual ~Lv2PluginInfo();