新增获取插件parameter名称接口

实现获取vst2最后一次改变的parameter

core/CMakeLists.txt

@@ -31,3 +31,9 @@ elseif(APPLE)
 elseif(UNIX AND NOT APPLE)
     target_compile_definitions(${PROJECT_NAME} PUBLIC PLATFORM_WINDOWS=0 PLATFORM_MACOS=0 PLATFORM_LINUX=1 GLFW_EXPOSE_NATIVE_X11)
 endif()
+
+if (CMAKE_BUILD_TYPE MATCHES "Debug")
+    target_compile_definitions(${PROJECT_NAME} PUBLIC BUILD_DEBUG=1)
+else()
+    target_compile_definitions(${PROJECT_NAME} PUBLIC BUILD_DEBUG=0)
+endif()

core/audio/plugin_host/plugin_host.h

@@ -37,6 +37,8 @@ public:
     [[nodiscard]] virtual std::string load_name() const { return ""; }
     [[nodiscard]] virtual std::string load_vendor() const { return ""; }
 
+    virtual std::string get_parameter_name(int index) const { return ""; }
+
     void init_channel_interface();
 
     std::string name;

core/audio/plugin_host/vst2/vst2_plugin_host.cpp

@@ -49,8 +49,13 @@ VstIntPtr vst_master_callback(AEffect* effect, VstInt32 opcode, VstInt32 index,
 {
     switch (opcode)
     {
-        case audioMasterAutomate:
+        case audioMasterAutomate: {
+            auto host = ((vst2_plugin_host *) effect->user);
+#if BUILD_DEBUG
+            spdlog::info("vst2 plugin {} automate, {} index = {}, value = {}", host->name, host->get_parameter_name(index), index, opt);
+#endif
             return 1;
+        }
         case audioMasterVersion:
             return kVstVersion; // 返回插件版本号
         case audioMasterWantMidi:
@@ -261,3 +266,9 @@ void vst2_plugin_host::close_editor() {
 VstIntPtr vst2_plugin_host::dispatch(VstInt32 opcode, VstInt32 index, VstIntPtr value, void* ptr, float opt) const {
     return effect_->dispatcher(effect_, opcode, index, value, ptr, opt);
 }
+
+std::string vst2_plugin_host::get_parameter_name(int index) const {
+    char buffer[256];
+    dispatch(effGetParamName, index, 0, buffer);
+    return buffer;
+}

core/audio/plugin_host/vst2/vst2_plugin_host.h

@@ -26,6 +26,7 @@ public:
     [[nodiscard]] bool has_editor() const override;
     void get_editor_size(uint32_t& width, uint32_t& height) const override;
     // [[nodiscard]] ImVec2 get_editor_size() const override;
+    std::string get_parameter_name(int index) const override;
 
     [[nodiscard]] std::string load_name() const override;
     [[nodiscard]] std::string load_vendor() const override;