Rename both Bridge classes to differentiate

Switching between them became a bit confusing.

src/wine-host/plugin-bridge.h

@@ -0,0 +1,78 @@
+// yabridge: a Wine VST bridge
+// Copyright (C) 2020  Robbert van der Helm
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include "native-includes.h"
+
+// `native-includes.h` has to be included before any other files as otherwise we
+// might get the wrong version of certain libraries
+#define WIN32_LEAN_AND_MEAN
+#include <vestige/aeffect.h>
+#include <windows.h>
+
+/**
+ * This handles the communication between the Linux native VST plugin and the
+ * Wine VST host. The functions below should be used as callback functions in an
+ * `AEffect` object.
+ */
+class PluginBridge {
+   public:
+    /**
+     * Initializes the Windows VST plugin and set up communication with the
+     * native Linux VST plugin.
+     *
+     * @param plugin_dll_path A (Unix style) path to the VST plugin .dll file to
+     *   load.
+     * @param socket_endpoint_path A (Unix style) path to the Unix socket
+     *   endpoint the native VST plugin created to communicate over.
+     *
+     * @throw std::runtime_error Thrown when the VST plugin could not be loaded,
+     *   or if communication could not be set up.
+     */
+    PluginBridge(std::string plugin_dll_path, std::string socket_endpoint_path);
+
+    intptr_t host_callback(AEffect*, int32_t, int32_t, intptr_t, void*, float);
+
+    // TODO: Remove debug loop
+    void dispatch_loop();
+
+    // TODO: Set up all callback handlers
+
+   private:
+    /**
+     * The shared library handle of the VST plugin. I sadly could not get
+     * Boost.DLL to work here, so we'll just load the VST plugisn by hand.
+     */
+    std::unique_ptr<std::remove_pointer_t<HMODULE>, decltype(&FreeLibrary)>
+        plugin_handle;
+
+    /**
+     * The loaded plugin's `AEffect` struct, obtained using the above library
+     * handle.
+     */
+    AEffect* plugin;
+
+    boost::asio::io_context io_context;
+    boost::asio::local::stream_protocol::endpoint socket_endpoint;
+
+    // The naming convention for these sockets is `<from>_<to>_<event>`. For
+    // instance the socket named `host_vst_dispatch` forwards
+    // `AEffect.dispatch()` calls from the native VST host to the Windows VST
+    // plugin (through the Wine VST host).
+    boost::asio::local::stream_protocol::socket host_vst_dispatch;
+    boost::asio::local::stream_protocol::socket vst_host_callback;
+};