Implement CLAP note ports extension

src/wine-host/bridges/clap-impls/host-proxy.cpp

@@ -47,6 +47,10 @@ clap_host_proxy::clap_host_proxy(ClapBridge& bridge,
       ext_audio_ports_vtable(clap_host_audio_ports_t{
           .is_rescan_flag_supported = ext_audio_ports_is_rescan_flag_supported,
           .rescan = ext_audio_ports_rescan,
+      }),
+      ext_note_ports_vtable(clap_host_note_ports_t{
+          .supported_dialects = ext_note_ports_supported_dialects,
+          .rescan = ext_note_ports_rescan,
       }) {}
 
 const void* CLAP_ABI
@@ -135,3 +139,22 @@ void CLAP_ABI clap_host_proxy::ext_audio_ports_rescan(const clap_host_t* host,
     self->bridge_.send_main_thread_message(clap::ext::audio_ports::host::Rescan{
         .owner_instance_id = self->owner_instance_id(), .flags = flags});
 }
+
+uint32_t CLAP_ABI
+clap_host_proxy::ext_note_ports_supported_dialects(const clap_host_t* host) {
+    assert(host && host->host_data);
+    auto self = static_cast<clap_host_proxy*>(host->host_data);
+
+    return self->bridge_.send_main_thread_message(
+        clap::ext::note_ports::host::SupportedDialects{
+            .owner_instance_id = self->owner_instance_id()});
+}
+
+void CLAP_ABI clap_host_proxy::ext_note_ports_rescan(const clap_host_t* host,
+                                                     uint32_t flags) {
+    assert(host && host->host_data);
+    auto self = static_cast<clap_host_proxy*>(host->host_data);
+
+    self->bridge_.send_main_thread_message(clap::ext::note_ports::host::Rescan{
+        .owner_instance_id = self->owner_instance_id(), .flags = flags});
+}

src/wine-host/bridges/clap-impls/host-proxy.h

@@ -19,6 +19,7 @@
 #include <atomic>
 
 #include <clap/ext/audio-ports.h>
+#include <clap/ext/note-ports.h>
 #include <clap/host.h>
 
 #include "../../common/serialization/clap/plugin-factory.h"
@@ -69,6 +70,11 @@ class clap_host_proxy {
     static void CLAP_ABI ext_audio_ports_rescan(const clap_host_t* host,
                                                 uint32_t flags);
 
+    static uint32_t CLAP_ABI
+    ext_note_ports_supported_dialects(const clap_host_t* host);
+    static void CLAP_ABI ext_note_ports_rescan(const clap_host_t* host,
+                                               uint32_t flags);
+
     /**
      * The extensions supported by the host, set just before calling
      * `clap_plugin::init()` on the bridged plugin. We'll allow the plugin to
@@ -92,6 +98,7 @@ class clap_host_proxy {
     // depends on whether the plugin supported this extension when the host
     // called `clap_plugin::init()`.
     const clap_host_audio_ports ext_audio_ports_vtable;
+    const clap_host_note_ports ext_note_ports_vtable;
 
     /**
      * Keeps track of whether there are pending host callbacks. Used to prevent

src/wine-host/bridges/clap.cpp

@@ -28,14 +28,17 @@ namespace fs = ghc::filesystem;
 
 ClapPluginExtensions::ClapPluginExtensions(const clap_plugin& plugin) noexcept
     : audio_ports(static_cast<const clap_plugin_audio_ports_t*>(
-          plugin.get_extension(&plugin, CLAP_EXT_AUDIO_PORTS))) {}
+          plugin.get_extension(&plugin, CLAP_EXT_AUDIO_PORTS))),
+      note_ports(static_cast<const clap_plugin_note_ports_t*>(
+          plugin.get_extension(&plugin, CLAP_EXT_NOTE_PORTS))) {}
 
 ClapPluginExtensions::ClapPluginExtensions() noexcept {}
 
 clap::plugin::SupportedPluginExtensions ClapPluginExtensions::supported()
     const noexcept {
-    return clap::plugin::SupportedPluginExtensions{.supports_audio_ports =
-                                                       audio_ports != nullptr};
+    return clap::plugin::SupportedPluginExtensions{
+        .supports_audio_ports = audio_ports != nullptr,
+        .supports_note_ports = note_ports != nullptr};
 }
 
 ClapPluginInstance::ClapPluginInstance(
@@ -334,6 +337,30 @@ void ClapBridge::run() {
                         .result = std::nullopt};
                 }
             },
+            [&](const clap::ext::note_ports::plugin::Count& request)
+                -> clap::ext::note_ports::plugin::Count::Response {
+                const auto& [instance, _] = get_instance(request.instance_id);
+
+                return instance.extensions.note_ports->count(
+                    instance.plugin.get(), request.is_input);
+            },
+            [&](const clap::ext::note_ports::plugin::Get& request)
+                -> clap::ext::note_ports::plugin::Get::Response {
+                const auto& [instance, _] = get_instance(request.instance_id);
+
+                // We'll also ignore the main thread requirement here for
+                // performance's sake
+                clap_note_port_info_t info{};
+                if (instance.extensions.note_ports->get(
+                        instance.plugin.get(), request.index, request.is_input,
+                        &info)) {
+                    return clap::ext::note_ports::plugin::GetResponse{.result =
+                                                                          info};
+                } else {
+                    return clap::ext::note_ports::plugin::GetResponse{
+                        .result = std::nullopt};
+                }
+            },
         });
 }
 

src/wine-host/bridges/clap.h

@@ -67,6 +67,7 @@ struct ClapPluginExtensions {
     clap::plugin::SupportedPluginExtensions supported() const noexcept;
 
     const clap_plugin_audio_ports_t* audio_ports = nullptr;
+    const clap_plugin_note_ports_t* note_ports = nullptr;
 };
 
 /**