Add the base for YaHostApplication

src/common/serialization/vst3/host-application.cpp

@@ -0,0 +1,69 @@
+// 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 "host-application.h"
+
+YaHostApplication::ConstructArgs::ConstructArgs() {}
+
+YaHostApplication::ConstructArgs::ConstructArgs(
+    Steinberg::IPtr<Steinberg::Vst::IHostApplication> context,
+    size_t component_instance_id)
+    : component_instance_id(component_instance_id) {
+    Steinberg::Vst::String128 name_array;
+    if (context->getName(name_array) == Steinberg::kResultOk) {
+#ifdef __WINE__
+        // Who even invented UTF-16
+        static_assert(sizeof(wchar_t) == sizeof(char16_t));
+#endif
+        name = std::u16string(reinterpret_cast<const char16_t*>(name_array));
+    }
+}
+
+YaHostApplication::YaHostApplication(const ConstructArgs&& args)
+    : arguments(std::move(args)){FUNKNOWN_CTOR}
+
+      YaHostApplication::~YaHostApplication() {
+    FUNKNOWN_DTOR
+}
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdelete-non-virtual-dtor"
+IMPLEMENT_REFCOUNT(YaHostApplication)
+#pragma GCC diagnostic pop
+
+tresult PLUGIN_API YaHostApplication::queryInterface(Steinberg::FIDString _iid,
+                                                     void** obj) {
+    QUERY_INTERFACE(_iid, obj, Steinberg::FUnknown::iid,
+                    Steinberg::Vst::IHostApplication);
+    QUERY_INTERFACE(_iid, obj, Steinberg::Vst::IHostApplication::iid,
+                    Steinberg::Vst::IHostApplication)
+
+    *obj = nullptr;
+    return Steinberg::kNoInterface;
+}
+
+tresult PLUGIN_API YaHostApplication::getName(Steinberg::Vst::String128 name) {
+    if (arguments.name) {
+        // Terminate with a null byte. There are no nice functions for copying
+        // UTF-16 strings (because who would use those?).
+        std::copy(arguments.name->begin(), arguments.name->end(), name);
+        name[arguments.name->size()] = 0;
+
+        return Steinberg::kResultOk;
+    } else {
+        return Steinberg::kNotImplemented;
+    }
+}