kunitoki · kunitoki · May 15, 2026 · May 16, 2026 · May 16, 2026 · May 16, 2026
diff --git a/AGENTS.md b/AGENTS.md
@@ -57,7 +57,6 @@ For main module headers (e.g., `yup_graphics.h`), include this declaration block
     description:        Brief module description
     website:            https://github.com/kunitoki/yup
     license:            ISC
-    minimumCppStandard: 17
 
     dependencies:       yup_graphics [other_dependencies]
     searchpaths:        native
@@ -337,9 +336,9 @@ yup::Result performOperation()
 yup::ResultValue<int> maybeGetInteger()
 {
     if (preconditionFailed)
-        return yup::ResultValue<int>::fail ("Precondition not met");
+        return yup::makeResultValueFail ("Precondition not met");
 
-    return 1;
+    return 1; // or yup::makeResultValueOk (1)
 }
 
 // Use assertions for programming errors

diff --git a/CLAUDE.md b/CLAUDE.md
@@ -57,7 +57,6 @@ For main module headers (e.g., `yup_graphics.h`), include this declaration block
     description:        Brief module description
     website:            https://github.com/kunitoki/yup
     license:            ISC
-    minimumCppStandard: 17
 
     dependencies:       yup_graphics [other_dependencies]
     searchpaths:        native
@@ -337,9 +336,9 @@ yup::Result performOperation()
 yup::ResultValue<int> maybeGetInteger()
 {
     if (preconditionFailed)
-        return yup::ResultValue<int>::fail ("Precondition not met");
+        return yup::makeResultValueFail ("Precondition not met");
 
-    return 1;
+    return 1; // or yup::makeResultValueOk (1)
 }
 
 // Use assertions for programming errors

diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -78,6 +78,7 @@ if (YUP_BUILD_EXAMPLES)
     add_subdirectory (examples/graphics)
     if (YUP_PLATFORM_DESKTOP)
         add_subdirectory (examples/plugin)
+        add_subdirectory (examples/audiograph)
     endif()
 endif()
 

diff --git a/README.md b/README.md
@@ -25,6 +25,15 @@
   <a href="./examples/graphics/source/examples/ColorLab.h"><img src="./docs/images/yup_color_picker.png" style="width:51.8%;" /></a>
 </div>
 
+<div style="display: flex; width: 100%; flex-wrap: nowrap;">
+  <a href="./examples/graphics/source/examples/AudioGraph.h"><img src="./docs/images/yup_audio_graph.png" style="width:49%;" /></a>
+  <a href="./examples/graphics/source/examples/AudioFileDemo.h"><img src="./docs/images/yup_audio_waveform.png" style="width:49%;" /></a>
+</div>
+
+<div style="display: flex; width: 100%; flex-wrap: nowrap;">
+  <a href="./examples/graphics/source/examples/AudioHost.h"><img src="./docs/images/yup_audio_host.png" style="width:99%;" /></a>
+</div>
+
 <div style="display: flex; width: 100%; flex-wrap: nowrap;">
   <a href="./examples/graphics/source/examples/FilterDemo.h"><img src="./docs/images/yup_dsp_filter_rbj.png" style="width:26.5%;" /></a>
   <a href="./examples/graphics/source/examples/FilterDemo.h"><img src="./docs/images/yup_dsp_filter_butter.png" style="width:26.5%;" /></a>
@@ -113,6 +122,14 @@ YUP brings a suite of powerful features, including:
 | **Linux**                | :construction:     | :construction:     |                    |                    |                           |                       |                       |
 
 
+## Supported Plugin Hosting Formats
+|                          | **CLAP**           | **VST3**           | **VST2**           | **AUv3**           | **AUv2**                  | **AAX**               | **LV2**               |
+|--------------------------|:------------------:|:------------------:|:------------------:|:------------------:|:-------------------------:|:---------------------:|:---------------------:|
+| **Windows**              | :construction:     | :construction:     |                    |                    |                           |                       |                       |
+| **macOS**                | :construction:     | :construction:     |                    |                    | :white_check_mark:        |                       |                       |
+| **Linux**                | :construction:     | :construction:     |                    |                    |                           |                       |                       |
+
+
 ## Supported Sound Formats
 
 |                   | **Wav**            | **Wav64**          | **Mp3**            | **OGG**            | **Flac**           | **Opus**           | **AAC**            | **WMF**            |
@@ -130,6 +147,7 @@ YUP brings a suite of powerful features, including:
 | **iOS** (enc)     | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |                    |
 | **iOS** (dec)     | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: | :white_check_mark: |                    |
 
+
 ## Prerequisites
 Before building, ensure you have a:
 - C++20-compliant compiler

diff --git a/cmake/yup_audio_plugin.cmake b/cmake/yup_audio_plugin.cmake
@@ -91,14 +91,19 @@ function (yup_audio_plugin)
     _yup_fetch_sdl2()
     list (APPEND additional_libraries sdl2::sdl2)
 
+    _yup_target_list_contains ("${YUP_ARG_MODULES}" yup_audio_plugin_host has_audio_plugin_host)
+    if (has_audio_plugin_host)
+        _yup_collect_audio_plugin_host_dependencies ("${YUP_ARG_DEFINITIONS}" audio_plugin_host_libraries)
+        list (APPEND additional_libraries ${audio_plugin_host_libraries})
+        if (audio_plugin_host_libraries)
+            target_link_libraries (${target_name}_shared INTERFACE
+                ${audio_plugin_host_libraries})
+        endif()
+    endif()
+
     # ==== Fetch clap SDK and build clap target
     if (YUP_ARG_PLUGIN_CREATE_CLAP)
-        _yup_message (STATUS "Fetching CLAP SDK")
-        _yup_fetchcontent_declare (clap
-            GIT_REPOSITORY https://github.com/free-audio/clap.git
-            GIT_TAG main)
-        FetchContent_MakeAvailable (clap)
-        set_target_properties (clap-tests PROPERTIES FOLDER "Tests")
+        _yup_fetch_clap()
 
         _yup_message (STATUS "Setting up CLAP plugin client")
         _yup_module_setup_plugin_client (
@@ -144,22 +149,7 @@ function (yup_audio_plugin)
 
     # ==== Fetch vst3 SDK and build vst3 target
     if (YUP_ARG_PLUGIN_CREATE_VST3)
-        _yup_message (STATUS "Fetching VST3 SDK")
-        set (SMTG_CREATE_MODULE_INFO OFF)
-        set (SMTG_ADD_VST3_UTILITIES OFF)
-        set (SMTG_ENABLE_VST3_HOSTING_EXAMPLES OFF)
-        set (SMTG_ENABLE_VST3_PLUGIN_EXAMPLES OFF)
-        set (SMTG_ENABLE_VSTGUI_SUPPORT OFF)
-        set (SMTG_CREATE_PLUGIN_LINK OFF)
-        if (NOT YUP_PLATFORM_MAC OR XCODE)
-            set (SMTG_RUN_VST_VALIDATOR ON)
-        else()
-            set (SMTG_RUN_VST_VALIDATOR OFF)
-        endif()
-        _yup_fetchcontent_declare (vst3sdk
-            GIT_REPOSITORY https://github.com/steinbergmedia/vst3sdk.git
-            GIT_TAG master)
-        FetchContent_MakeAvailable (vst3sdk)
+        _yup_fetch_vst3sdk()
 
         _yup_message (STATUS "Setting up VST3 plugin client")
         smtg_enable_vst3_sdk()

diff --git a/cmake/yup_dependencies.cmake b/cmake/yup_dependencies.cmake
@@ -77,6 +77,157 @@ endfunction()
 
 #==============================================================================
 
+function (_yup_fetch_clap)
+    if (NOT TARGET clap)
+        _yup_message (STATUS "Fetching CLAP SDK")
+        _yup_fetchcontent_declare (clap
+            GIT_REPOSITORY https://github.com/free-audio/clap.git
+            GIT_TAG main)
+
+        FetchContent_MakeAvailable (clap)
+    endif()
+
+    if (TARGET clap-tests)
+        set_target_properties (clap-tests PROPERTIES FOLDER "Tests")
+    endif()
+endfunction()
+
+#==============================================================================
+
+function (_yup_fetch_vst3sdk)
+    if (NOT TARGET sdk)
+        _yup_message (STATUS "Fetching VST3 SDK")
+
+        set (SMTG_CREATE_MODULE_INFO OFF)
+        set (SMTG_ADD_VST3_UTILITIES OFF)
+        set (SMTG_ENABLE_VST3_HOSTING_EXAMPLES OFF)
+        set (SMTG_ENABLE_VST3_PLUGIN_EXAMPLES OFF)
+        set (SMTG_ENABLE_VSTGUI_SUPPORT OFF)
+        set (SMTG_CREATE_PLUGIN_LINK OFF)
+        if (NOT YUP_PLATFORM_MAC OR XCODE)
+            set (SMTG_RUN_VST_VALIDATOR ON)
+        else()
+            set (SMTG_RUN_VST_VALIDATOR OFF)
+        endif()
+
+        _yup_fetchcontent_declare (vst3sdk
+            GIT_REPOSITORY https://github.com/steinbergmedia/vst3sdk.git
+            GIT_TAG master)
+
+        FetchContent_MakeAvailable (vst3sdk)
+    endif()
+
+    if (NOT TARGET yup_audio_plugin_host_vst3sdk)
+        add_library (yup_audio_plugin_host_vst3sdk INTERFACE)
+        target_link_libraries (yup_audio_plugin_host_vst3sdk INTERFACE sdk)
+
+        set (vst3sdk_source_dir "")
+        if (DEFINED vst3sdk_SOURCE_DIR)
+            set (vst3sdk_source_dir "${vst3sdk_SOURCE_DIR}")
+        elseif (TARGET sdk)
+            get_target_property (vst3sdk_source_dir sdk SOURCE_DIR)
+        endif()
+
+        set (vst3sdk_memorystream_source "${vst3sdk_source_dir}/public.sdk/source/common/memorystream.cpp")
+        if (vst3sdk_source_dir AND EXISTS "${vst3sdk_memorystream_source}")
+            target_sources (yup_audio_plugin_host_vst3sdk INTERFACE "${vst3sdk_memorystream_source}")
+        endif()
+
+        set (vst3sdk_parameterchanges_source "${vst3sdk_source_dir}/public.sdk/source/vst/hosting/parameterchanges.cpp")
+        if (vst3sdk_source_dir AND EXISTS "${vst3sdk_parameterchanges_source}")
+            target_sources (yup_audio_plugin_host_vst3sdk INTERFACE "${vst3sdk_parameterchanges_source}")
+        endif()
+
+        set (vst3sdk_eventlist_source "${vst3sdk_source_dir}/public.sdk/source/vst/hosting/eventlist.cpp")
+        if (vst3sdk_source_dir AND EXISTS "${vst3sdk_eventlist_source}")
+            target_sources (yup_audio_plugin_host_vst3sdk INTERFACE "${vst3sdk_eventlist_source}")
+        endif()
+    endif()
+endfunction()
+
+#==============================================================================
+
+function (_yup_target_list_contains target_list target_name output_variable)
+    foreach (target IN LISTS target_list)
+        if ("${target}" STREQUAL "${target_name}" OR "${target}" STREQUAL "yup::${target_name}")
+            set (${output_variable} ON PARENT_SCOPE)
+            return()
+        endif()
+
+        if (TARGET "${target}")
+            get_target_property (aliased_target "${target}" ALIASED_TARGET)
+            if ("${aliased_target}" STREQUAL "${target_name}")
+                set (${output_variable} ON PARENT_SCOPE)
+                return()
+            endif()
+        endif()
+    endforeach()
+
+    set (${output_variable} OFF PARENT_SCOPE)
+endfunction()
+
+#==============================================================================
+
+function (_yup_definitions_enable definitions definition_name output_variable)
+    set (enabled OFF)
+
+    foreach (definition IN LISTS definitions)
+        string (REGEX REPLACE "^-D" "" normalized_definition "${definition}")
+
+        if (normalized_definition MATCHES "^${definition_name}($|=)")
+            set (enabled ON)
+
+            if (normalized_definition MATCHES "^${definition_name}=")
+                string (REGEX REPLACE "^${definition_name}=(.*)$" "\\1" definition_value "${normalized_definition}")
+                string (STRIP "${definition_value}" definition_value)
+                string (REGEX REPLACE "^\"(.*)\"$" "\\1" definition_value "${definition_value}")
+                string (REGEX REPLACE "^'(.*)'$" "\\1" definition_value "${definition_value}")
+                string (TOUPPER "${definition_value}" definition_value)
+
+                if ("${definition_value}" STREQUAL "0"
+                    OR "${definition_value}" STREQUAL "OFF"
+                    OR "${definition_value}" STREQUAL "FALSE"
+                    OR "${definition_value}" STREQUAL "NO")
+                    set (enabled OFF)
+                endif()
+            endif()
+        endif()
+    endforeach()
+
+    set (${output_variable} "${enabled}" PARENT_SCOPE)
+endfunction()
+
+#==============================================================================
+
+function (_yup_collect_audio_plugin_host_dependencies definitions output_variable)
+    set (dependencies "")
+
+    _yup_definitions_enable ("${definitions}" YUP_AUDIO_PLUGIN_HOST_ENABLE_CLAP enable_clap)
+    if (enable_clap)
+        _yup_fetch_clap()
+        list (APPEND dependencies clap)
+    endif()
+
+    _yup_definitions_enable ("${definitions}" YUP_AUDIO_PLUGIN_HOST_ENABLE_VST3 enable_vst3)
+    if (enable_vst3)
+        _yup_fetch_vst3sdk()
+        list (APPEND dependencies yup_audio_plugin_host_vst3sdk)
+    endif()
+
+    _yup_definitions_enable ("${definitions}" YUP_AUDIO_PLUGIN_HOST_ENABLE_AU enable_au)
+    if (enable_au AND YUP_PLATFORM_MAC)
+        list (APPEND dependencies
+            "-framework AudioUnit"
+            "-framework AudioToolbox"
+            "-framework CoreAudio"
+            "-framework CoreFoundation")
+    endif()
+
+    set (${output_variable} "${dependencies}" PARENT_SCOPE)
+endfunction()
+
+#==============================================================================
+
 function (_yup_fetch_perfetto)
     if (TARGET perfetto::perfetto)
         return()

diff --git a/cmake/yup_modules.cmake b/cmake/yup_modules.cmake
@@ -802,6 +802,11 @@ function (yup_add_module module_path modules_definitions module_group)
         list (APPEND module_defines ${module_definition})
     endforeach()
 
+    if ("${module_name}" STREQUAL "yup_audio_plugin_host")
+        _yup_collect_audio_plugin_host_dependencies ("${module_defines}" audio_plugin_host_dependencies)
+        list (APPEND module_dependencies ${audio_plugin_host_dependencies})
+    endif()
+
     # ==== Prepare include paths
     get_filename_component (module_include_path ${module_path} DIRECTORY)
     list (APPEND module_include_paths "${module_include_path}" "${module_path}")

diff --git a/cmake/yup_standalone.cmake b/cmake/yup_standalone.cmake
@@ -102,6 +102,14 @@ function (yup_standalone_app)
         list (APPEND additional_libraries perfetto::perfetto)
     endif()
 
+    if (YUP_PLATFORM_DESKTOP)
+        _yup_target_list_contains ("${YUP_ARG_MODULES}" yup_audio_plugin_host has_audio_plugin_host)
+        if (has_audio_plugin_host)
+            _yup_collect_audio_plugin_host_dependencies ("${YUP_ARG_DEFINITIONS}" audio_plugin_host_libraries)
+            list (APPEND additional_libraries ${audio_plugin_host_libraries})
+        endif()
+    endif()
+
     # ==== Prepare executable
     set (executable_options "")
     if (NOT "${target_console}")

diff --git a/docs/images/yup_audio_graph.png b/docs/images/yup_audio_graph.png
diff --git a/docs/images/yup_audio_host.png b/docs/images/yup_audio_host.png
diff --git a/docs/images/yup_audio_waveform.png b/docs/images/yup_audio_waveform.png
diff --git a/examples/audiograph/CMakeLists.txt b/examples/audiograph/CMakeLists.txt
@@ -0,0 +1,55 @@
+# ==============================================================================
+#
+#   This file is part of the YUP library.
+#   Copyright (c) 2026 - kunitoki@gmail.com
+#
+#   YUP is an open source library subject to open-source licensing.
+#
+#   The code included in this file is provided under the terms of the ISC license
+#   http://www.isc.org/downloads/software-support-policy/isc-license. Permission
+#   to use, copy, modify, and/or distribute this software for any purpose with or
+#   without fee is hereby granted provided that the above copyright notice and
+#   this permission notice appear in all copies.
+#
+#   YUP IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
+#   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
+#   DISCLAIMED.
+#
+# ==============================================================================
+
+cmake_minimum_required (VERSION 3.31)
+
+set (target_name example_audiograph)
+set (target_version "1.0.0")
+
+project (${target_name} VERSION ${target_version})
+
+yup_standalone_app (
+    TARGET_NAME ${target_name}
+    TARGET_VERSION ${target_version}
+    TARGET_IDE_GROUP "Examples"
+    TARGET_APP_ID "org.yup.${target_name}"
+    TARGET_APP_NAMESPACE "org.yup"
+    DEFINITIONS
+        YUP_AUDIO_PLUGIN_HOST_ENABLE_CLAP=1
+        YUP_AUDIO_PLUGIN_HOST_ENABLE_AU=1
+        YUP_AUDIO_PLUGIN_HOST_ENABLE_VST3=1
+    MODULES
+        yup::yup_core
+        yup::yup_audio_basics
+        yup::yup_audio_devices
+        yup::yup_dsp
+        yup::yup_events
+        yup::yup_graphics
+        yup::yup_gui
+        yup::yup_audio_formats
+        yup::yup_audio_gui
+        yup::yup_audio_processors
+        yup::yup_audio_graph
+        yup::yup_audio_plugin_host)
+
+file (GLOB_RECURSE sources
+    "${CMAKE_CURRENT_LIST_DIR}/source/*.cpp"
+    "${CMAKE_CURRENT_LIST_DIR}/source/*.h")
+source_group (TREE ${CMAKE_CURRENT_LIST_DIR}/ FILES ${sources})
+target_sources (${target_name} PRIVATE ${sources})