diff --git a/meson.build b/meson.build
index 0f7fb897..a6d08531 100644
--- a/meson.build
+++ b/meson.build
@@ -114,6 +114,7 @@ vst3_plugin_sources = [
'src/common/serialization/vst3/component-handler/component-handler.cpp',
'src/common/serialization/vst3/component-handler/component-handler-2.cpp',
'src/common/serialization/vst3/component-handler/component-handler-3.cpp',
+ 'src/common/serialization/vst3/component-handler/component-handler-bus-activation.cpp',
'src/common/serialization/vst3/component-handler/unit-handler.cpp',
'src/common/serialization/vst3/component-handler/unit-handler-2.cpp',
'src/common/serialization/vst3/context-menu/context-menu.cpp',
@@ -193,6 +194,7 @@ if with_vst3
'src/common/serialization/vst3/component-handler/component-handler.cpp',
'src/common/serialization/vst3/component-handler/component-handler-2.cpp',
'src/common/serialization/vst3/component-handler/component-handler-3.cpp',
+ 'src/common/serialization/vst3/component-handler/component-handler-bus-activation.cpp',
'src/common/serialization/vst3/component-handler/unit-handler.cpp',
'src/common/serialization/vst3/component-handler/unit-handler-2.cpp',
'src/common/serialization/vst3/context-menu/context-menu.cpp',
diff --git a/src/common/serialization/vst3/README.md b/src/common/serialization/vst3/README.md
index 1b30c3fe..fbbaf3fc 100644
--- a/src/common/serialization/vst3/README.md
+++ b/src/common/serialization/vst3/README.md
@@ -6,7 +6,7 @@ for more information on how the serialization works.
The following interfaces are not yet implemented:
-- Interfaces introduced after VST 3.6.6
+- Interfaces introduced after VST 3.6.8
- The [Presonus extensions](https://presonussoftware.com/en_US/developer),
although most of these things seem to overlap with newer VST3 interfaces
@@ -42,20 +42,21 @@ VST3 plugin interfaces are implemented as follows:
VST3 host interfaces are implemented as follows:
-| yabridge class | Included in | Interfaces |
-| --------------------------- | --------------------------- | -------------------- |
-| `Vst3HostContextProxy` | | All of the below: |
-| `YaHostApplication` | `Vst3HostContextProxy` | `IHostApplication` |
-| `Vst3ComponentHandlerProxy` | | All of the below: |
-| `YaComponentHandler` | `Vst3ComponentHandlerProxy` | `IComponentHandler` |
-| `YaComponentHandler2` | `Vst3ComponentHandlerProxy` | `IComponentHandler2` |
-| `YaComponentHandler3` | `Vst3ComponentHandlerProxy` | `IComponentHandler3` |
-| `YaUnitHandler` | `Vst3ComponentHandlerProxy` | `IUnitHandler` |
-| `YaUnitHandler2` | `Vst3ComponentHandlerProxy` | `IUnitHandler2` |
-| `Vst3ContextMenuProxy` | | All of the below: |
-| `YaContextMenu` | `Vst3ContextMenuProxy` | `IContextMenu` |
-| `Vst3PlugFrameProxy` | | All of the below: |
-| `YaPlugFrame` | `Vst3PlugFrameProxy` | `IPlugFrame` |
+| yabridge class | Included in | Interfaces |
+| --------------------------------- | --------------------------- | -------------------------------- |
+| `Vst3HostContextProxy` | | All of the below: |
+| `YaHostApplication` | `Vst3HostContextProxy` | `IHostApplication` |
+| `Vst3ComponentHandlerProxy` | | All of the below: |
+| `YaComponentHandler` | `Vst3ComponentHandlerProxy` | `IComponentHandler` |
+| `YaComponentHandler2` | `Vst3ComponentHandlerProxy` | `IComponentHandler2` |
+| `YaComponentHandler3` | `Vst3ComponentHandlerProxy` | `IComponentHandler3` |
+| `YaComponentHandlerBusActivation` | `Vst3ComponentHandlerProxy` | `IComponentHandlerBusActivation` |
+| `YaUnitHandler` | `Vst3ComponentHandlerProxy` | `IUnitHandler` |
+| `YaUnitHandler2` | `Vst3ComponentHandlerProxy` | `IUnitHandler2` |
+| `Vst3ContextMenuProxy` | | All of the below: |
+| `YaContextMenu` | `Vst3ContextMenuProxy` | `IContextMenu` |
+| `Vst3PlugFrameProxy` | | All of the below: |
+| `YaPlugFrame` | `Vst3PlugFrameProxy` | `IPlugFrame` |
The following host interfaces are passed as function arguments and are thus also
implemented for serialization purposes:
diff --git a/src/common/serialization/vst3/component-handler/component-handler-bus-activation.cpp b/src/common/serialization/vst3/component-handler/component-handler-bus-activation.cpp
new file mode 100644
index 00000000..ac6f3480
--- /dev/null
+++ b/src/common/serialization/vst3/component-handler/component-handler-bus-activation.cpp
@@ -0,0 +1,28 @@
+// yabridge: a Wine VST bridge
+// Copyright (C) 2020-2021 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 .
+
+#include "component-handler-bus-activation.h"
+
+YaComponentHandlerBusActivation::ConstructArgs::ConstructArgs() {}
+
+YaComponentHandlerBusActivation::ConstructArgs::ConstructArgs(
+ Steinberg::IPtr object)
+ : supported(Steinberg::FUnknownPtr<
+ Steinberg::Vst::IComponentHandlerBusActivation>(object)) {}
+
+YaComponentHandlerBusActivation::YaComponentHandlerBusActivation(
+ const ConstructArgs&& args)
+ : arguments(std::move(args)) {}
diff --git a/src/common/serialization/vst3/component-handler/component-handler-bus-activation.h b/src/common/serialization/vst3/component-handler/component-handler-bus-activation.h
new file mode 100644
index 00000000..7047d843
--- /dev/null
+++ b/src/common/serialization/vst3/component-handler/component-handler-bus-activation.h
@@ -0,0 +1,77 @@
+// yabridge: a Wine VST bridge
+// Copyright (C) 2020-2021 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 .
+
+#pragma once
+
+#include
+#include "bitsery/ext/std_optional.h"
+
+#include "../../common.h"
+#include "../base.h"
+#include "../context-menu-proxy.h"
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
+
+/**
+ * Wraps around `IComponentHandlerBusActivation` for serialization purposes.
+ * This is instantiated as part of `Vst3ComponentHandlerBusActivationProxy`.
+ */
+class YaComponentHandlerBusActivation
+ : public Steinberg::Vst::IComponentHandlerBusActivation {
+ public:
+ /**
+ * These are the arguments for creating a `YaComponentHandlerBusActivation`.
+ */
+ struct ConstructArgs {
+ ConstructArgs();
+
+ /**
+ * Check whether an existing implementation implements
+ * `IComponentHandlerBusActivation` and read arguments from it.
+ */
+ ConstructArgs(Steinberg::IPtr object);
+
+ /**
+ * Whether the object supported this interface.
+ */
+ bool supported;
+
+ template
+ void serialize(S& s) {
+ s.value1b(supported);
+ }
+ };
+
+ /**
+ * Instantiate this instance with arguments read from another interface
+ * implementation.
+ */
+ YaComponentHandlerBusActivation(const ConstructArgs&& args);
+
+ inline bool supported() const { return arguments.supported; }
+
+ virtual tresult PLUGIN_API
+ requestBusActivation(Steinberg::Vst::MediaType type,
+ Steinberg::Vst::BusDirection dir,
+ int32 index,
+ TBool state) override = 0;
+
+ protected:
+ ConstructArgs arguments;
+};
+
+#pragma GCC diagnostic pop