Add handlers for control messages and callbacks

src/plugin/bridges/vst3.cpp

@@ -37,4 +37,9 @@ Vst3PluginBridge::Vst3PluginBridge()
     // This will block until all sockets have been connected to by the Wine VST
     // host
     connect_sockets_guarded();
+
+    host_callback_handler = std::jthread([&]() {
+        // TODO: Handle callbacks
+        // sockets.vst_host_callback.receive_multi();
+    });
 }

src/plugin/bridges/vst3.h

@@ -52,6 +52,12 @@ class Vst3PluginBridge : PluginBridge<Vst3Sockets<std::jthread>> {
     Vst3PluginBridge();
 
    private:
+    /**
+     * Handles callbacks from the plugin to the host over the
+     * `vst_host_callback` sockets.
+     */
+    std::jthread host_callback_handler;
+
     /**
      * The logging facility used for this instance of yabridge. Wraps around
      * `PluginBridge::generic_logger`.

src/wine-host/bridges/vst3.cpp

@@ -47,6 +47,11 @@ Vst3Bridge::Vst3Bridge(MainContext& main_context,
 
     // TODO: We should send a copy of the configuration from the plugin at this
     // point config = sockets.host_vst_control.receive_single<Configuration>();
+
+    control_handler = Win32Thread([&]() {
+        // TODO: Handle control messages
+        // sockets.host_vst_control.receive_multi();
+    });
 }
 
 void Vst3Bridge::run() {

src/wine-host/bridges/vst3.h

@@ -79,4 +79,9 @@ class Vst3Bridge : public HostBridge {
      *       threads to exit.
      */
     Vst3Sockets<Win32Thread> sockets;
+
+    /**
+     * Handles control messages host over the `hsot_vst_control` sockets.
+     */
+    Win32Thread control_handler;
 };