Implement IAudioProcessor::setupProcessing()

src/common/logging/vst3.cpp

@@ -188,6 +188,18 @@ void Vst3Logger::log_request(bool is_host_vst,
     });
 }
 
+void Vst3Logger::log_request(bool is_host_vst,
+                             const YaComponent::SetupProcessing& request) {
+    log_request_base(is_host_vst, [&](auto& message) {
+        message << "<IAudioProcessor* #" << request.instance_id
+                << ">::setupProcessing(setup = <SetupProcessing with mode = "
+                << request.setup.processMode << ", symbolic_sample_size = "
+                << request.setup.symbolicSampleSize
+                << ", max_buffer_size = " << request.setup.maxSamplesPerBlock
+                << " and sample_rate = " << request.setup.sampleRate << ">)";
+    });
+}
+
 void Vst3Logger::log_request(bool is_host_vst,
                              const YaPluginFactory::Construct&) {
     log_request_base(is_host_vst,

src/common/logging/vst3.h

@@ -73,6 +73,7 @@ class Vst3Logger {
     void log_request(bool is_host_vst,
                      const YaComponent::CanProcessSampleSize&);
     void log_request(bool is_host_vst, const YaComponent::GetLatencySamples&);
+    void log_request(bool is_host_vst, const YaComponent::SetupProcessing&);
     void log_request(bool is_host_vst, const YaPluginFactory::Construct&);
     void log_request(bool is_host_vst, const YaPluginFactory::SetHostContext&);
     void log_request(bool is_host_vst, const WantsConfiguration&);

src/common/serialization/vst3.h

@@ -73,6 +73,7 @@ using ControlRequest = std::variant<YaComponent::Construct,
                                     YaComponent::GetBusArrangement,
                                     YaComponent::CanProcessSampleSize,
                                     YaComponent::GetLatencySamples,
+                                    YaComponent::SetupProcessing,
                                     YaPluginFactory::Construct,
                                     YaPluginFactory::SetHostContext>;
 

src/common/serialization/vst3/component.h

@@ -524,9 +524,8 @@ class YaComponent : public Steinberg::Vst::IComponent,
     canProcessSampleSize(int32 symbolicSampleSize) override = 0;
 
     /**
-     * Message to pass through a call to
-     * `IAudioProcessor::getLatencySamples()` to the Wine
-     * plugin host.
+     * Message to pass through a call to `IAudioProcessor::getLatencySamples()`
+     * to the Wine plugin host.
      */
     struct GetLatencySamples {
         using Response = PrimitiveWrapper<uint32>;
@@ -540,6 +539,25 @@ class YaComponent : public Steinberg::Vst::IComponent,
     };
 
     virtual uint32 PLUGIN_API getLatencySamples() override = 0;
+
+    /**
+     * Message to pass through a call to
+     * `IAudioProcessor::setupProcessing(setup)` to the Wine plugin host.
+     */
+    struct SetupProcessing {
+        using Response = UniversalTResult;
+
+        native_size_t instance_id;
+
+        Steinberg::Vst::ProcessSetup setup;
+
+        template <typename S>
+        void serialize(S& s) {
+            s.value8b(instance_id);
+            s.object(setup);
+        }
+    };
+
     virtual tresult PLUGIN_API
     setupProcessing(Steinberg::Vst::ProcessSetup& setup) override = 0;
     virtual tresult PLUGIN_API setProcessing(TBool state) override = 0;
@@ -578,5 +596,13 @@ void serialize(S& s, Steinberg::Vst::RoutingInfo& info) {
     s.value4b(info.busIndex);
     s.value4b(info.channel);
 }
+
+template <typename S>
+void serialize(S& s, Steinberg::Vst::ProcessSetup& setup) {
+    s.value4b(setup.processMode);
+    s.value4b(setup.symbolicSampleSize);
+    s.value4b(setup.maxSamplesPerBlock);
+    s.value8b(setup.sampleRate);
+}
 }  // namespace Vst
 }  // namespace Steinberg

src/plugin/bridges/vst3-impls/component.cpp

@@ -189,9 +189,8 @@ uint32 PLUGIN_API YaComponentPluginImpl::getLatencySamples() {
 
 tresult PLUGIN_API
 YaComponentPluginImpl::setupProcessing(Steinberg::Vst::ProcessSetup& setup) {
-    // TODO: Implement
-    bridge.logger.log("TODO: IAudioProcessor::setupProcessing()");
-    return Steinberg::kNotImplemented;
+    return bridge.send_message(YaComponent::SetupProcessing{
+        .instance_id = arguments.instance_id, .setup = setup});
 }
 
 tresult PLUGIN_API YaComponentPluginImpl::setProcessing(TBool state) {

src/wine-host/bridges/vst3.cpp

@@ -184,17 +184,22 @@ void Vst3Bridge::run() {
                 return YaComponent::GetBusArrangementResponse{
                     .result = result, .updated_arr = request.arr};
             },
-            [&](YaComponent::CanProcessSampleSize& request)
+            [&](const YaComponent::CanProcessSampleSize& request)
                 -> YaComponent::CanProcessSampleSize::Response {
                 return component_instances[request.instance_id]
                     .audio_processor->canProcessSampleSize(
                         request.symbolic_sample_size);
             },
-            [&](YaComponent::GetLatencySamples& request)
+            [&](const YaComponent::GetLatencySamples& request)
                 -> YaComponent::GetLatencySamples::Response {
                 return component_instances[request.instance_id]
                     .audio_processor->getLatencySamples();
             },
+            [&](YaComponent::SetupProcessing& request)
+                -> YaComponent::SetupProcessing::Response {
+                return component_instances[request.instance_id]
+                    .audio_processor->setupProcessing(request.setup);
+            },
             [&](const YaPluginFactory::Construct&)
                 -> YaPluginFactory::Construct::Response {
                 return YaPluginFactory::ConstructArgs(