Add Vst3PlugFrameProxy

For proxying the `IPlugFrame*` passed to `IPlugView::setFrame()`.

src/common/serialization/vst3/plug-frame-proxy.cpp

@@ -0,0 +1,50 @@
+// 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/>.
+
+#include "plug-frame-proxy.h"
+
+Vst3PlugFrameProxy::ConstructArgs::ConstructArgs() {}
+
+Vst3PlugFrameProxy::ConstructArgs::ConstructArgs(
+    Steinberg::IPtr<Steinberg::FUnknown> object,
+    size_t owner_instance_id)
+    : owner_instance_id(owner_instance_id), plug_frame_args(object) {}
+
+Vst3PlugFrameProxy::Vst3PlugFrameProxy(const ConstructArgs&& args)
+    : YaPlugFrame(std::move(args.plug_frame_args)),
+      arguments(std::move(args)){FUNKNOWN_CTOR}
+
+      Vst3PlugFrameProxy::~Vst3PlugFrameProxy() {
+    FUNKNOWN_DTOR
+}
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdelete-non-virtual-dtor"
+IMPLEMENT_REFCOUNT(Vst3PlugFrameProxy)
+#pragma GCC diagnostic pop
+
+tresult PLUGIN_API Vst3PlugFrameProxy::queryInterface(Steinberg::FIDString _iid,
+                                                      void** obj) {
+    if (YaPlugFrame::supported()) {
+        QUERY_INTERFACE(_iid, obj, Steinberg::FUnknown::iid,
+                        Steinberg::IPlugFrame)
+        QUERY_INTERFACE(_iid, obj, Steinberg::IPlugFrame::iid,
+                        Steinberg::IPlugFrame)
+    }
+
+    *obj = nullptr;
+    return Steinberg::kNoInterface;
+}