Usefull example of AUv3

.gitignore

@@ -46,3 +46,4 @@ playground.xcworkspace
 # https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
 #
 # Pods/
+AUInstrument.xcodeproj/xcshareddata/

AUInstrument.xcodeproj/project.pbxproj

@@ -26,7 +26,7 @@
 		07DBB1E31CCB0A8000D68648 /* DSPKernel.hpp in Headers */ = {isa = PBXBuildFile; fileRef = 07DBB1E01CCB0A8000D68648 /* DSPKernel.hpp */; };
 		07DBB1E41CCB0A8000D68648 /* DSPKernel.mm in Sources */ = {isa = PBXBuildFile; fileRef = 07DBB1E11CCB0A8000D68648 /* DSPKernel.mm */; };
 		07DBB1E71CCB0A9000D68648 /* Oscillator.h in Headers */ = {isa = PBXBuildFile; fileRef = 07DBB1E51CCB0A9000D68648 /* Oscillator.h */; };
-		07DBB1E81CCB0A9000D68648 /* Oscillator.m in Sources */ = {isa = PBXBuildFile; fileRef = 07DBB1E61CCB0A9000D68648 /* Oscillator.m */; };
+		07DBB1E81CCB0A9000D68648 /* Oscillator.mm in Sources */ = {isa = PBXBuildFile; fileRef = 07DBB1E61CCB0A9000D68648 /* Oscillator.mm */; };
 		07DBB1ED1CCB0AA900D68648 /* WaveSynthAU.h in Headers */ = {isa = PBXBuildFile; fileRef = 07DBB1E91CCB0AA900D68648 /* WaveSynthAU.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		07DBB1EE1CCB0AA900D68648 /* WaveSynthAU.mm in Sources */ = {isa = PBXBuildFile; fileRef = 07DBB1EA1CCB0AA900D68648 /* WaveSynthAU.mm */; };
 		07F092DA1CCEB48E00794E34 /* AudioEngine.m in Sources */ = {isa = PBXBuildFile; fileRef = 07DBB1D21CCB0A6200D68648 /* AudioEngine.m */; };
@@ -119,7 +119,7 @@
 		07DBB1E01CCB0A8000D68648 /* DSPKernel.hpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.h; name = DSPKernel.hpp; path = DSPKernel/DSPKernel.hpp; sourceTree = "<group>"; };
 		07DBB1E11CCB0A8000D68648 /* DSPKernel.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; name = DSPKernel.mm; path = DSPKernel/DSPKernel.mm; sourceTree = "<group>"; };
 		07DBB1E51CCB0A9000D68648 /* Oscillator.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = Oscillator.h; path = WaveSynthFramework/Oscillator/Oscillator.h; sourceTree = SOURCE_ROOT; };
-		07DBB1E61CCB0A9000D68648 /* Oscillator.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = Oscillator.m; path = WaveSynthFramework/Oscillator/Oscillator.m; sourceTree = SOURCE_ROOT; };
+		07DBB1E61CCB0A9000D68648 /* Oscillator.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; name = Oscillator.mm; path = WaveSynthFramework/Oscillator/Oscillator.mm; sourceTree = SOURCE_ROOT; };
 		07DBB1E91CCB0AA900D68648 /* WaveSynthAU.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = WaveSynthAU.h; sourceTree = "<group>"; };
 		07DBB1EA1CCB0AA900D68648 /* WaveSynthAU.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = WaveSynthAU.mm; sourceTree = "<group>"; };
 		07FC1E851CC09D2D00C4AD6B /* AUInstrument.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = AUInstrument.app; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -205,7 +205,7 @@
 			isa = PBXGroup;
 			children = (
 				07DBB1E51CCB0A9000D68648 /* Oscillator.h */,
-				07DBB1E61CCB0A9000D68648 /* Oscillator.m */,
+				07DBB1E61CCB0A9000D68648 /* Oscillator.mm */,
 			);
 			name = Oscillator;
 			sourceTree = "<group>";
@@ -249,6 +249,7 @@
 				07FC1E861CC09D2D00C4AD6B /* Products */,
 			);
 			sourceTree = "<group>";
+			usesTabs = 0;
 		};
 		07FC1E861CC09D2D00C4AD6B /* Products */ = {
 			isa = PBXGroup;
@@ -383,7 +384,7 @@
 		07FC1E7D1CC09D2C00C4AD6B /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0730;
+				LastUpgradeCheck = 1320;
 				ORGANIZATIONNAME = "Eric George";
 				TargetAttributes = {
 					075D4EFE1CCB232D001D95E4 = {
@@ -399,7 +400,7 @@
 			};
 			buildConfigurationList = 07FC1E801CC09D2C00C4AD6B /* Build configuration list for PBXProject "AUInstrument" */;
 			compatibilityVersion = "Xcode 3.2";
-			developmentRegion = English;
+			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
@@ -464,7 +465,7 @@
 				075F69C51CCD907C00C7E651 /* MIDIEvent.m in Sources */,
 				07FD040E1CCC6EEB00BA14BB /* WaveSynthProc.mm in Sources */,
 				0765D8911CCF07B200DE7A19 /* WaveSynthAUViewController.m in Sources */,
-				07DBB1E81CCB0A9000D68648 /* Oscillator.m in Sources */,
+				07DBB1E81CCB0A9000D68648 /* Oscillator.mm in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
@@ -533,7 +534,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES = NO;
-				CODE_SIGN_IDENTITY = "iPhone Developer";
+				DEVELOPMENT_TEAM = "";
 				INFOPLIST_FILE = WaveSynthExtension/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @executable_path/../../Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = AUInstrument.WaveSynthExtension;
@@ -546,7 +547,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES = NO;
-				CODE_SIGN_IDENTITY = "iPhone Developer";
+				DEVELOPMENT_TEAM = "";
 				INFOPLIST_FILE = WaveSynthExtension/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @executable_path/../../Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = AUInstrument.WaveSynthExtension;
@@ -560,9 +561,9 @@
 			buildSettings = {
 				APPLICATION_EXTENSION_API_ONLY = YES;
 				CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES = NO;
-				CODE_SIGN_IDENTITY = "iPhone Developer";
 				CURRENT_PROJECT_VERSION = 1;
 				DEFINES_MODULE = YES;
+				DEVELOPMENT_TEAM = "";
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
@@ -572,6 +573,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = WaveSynthFramework;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTS_MACCATALYST = NO;
+				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -582,9 +585,9 @@
 			buildSettings = {
 				APPLICATION_EXTENSION_API_ONLY = YES;
 				CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES = NO;
-				CODE_SIGN_IDENTITY = "iPhone Developer";
 				CURRENT_PROJECT_VERSION = 1;
 				DEFINES_MODULE = YES;
+				DEVELOPMENT_TEAM = "";
 				DYLIB_COMPATIBILITY_VERSION = 1;
 				DYLIB_CURRENT_VERSION = 1;
 				DYLIB_INSTALL_NAME_BASE = "@rpath";
@@ -594,6 +597,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = WaveSynthFramework;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SUPPORTS_MACCATALYST = NO;
+				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
 			};
@@ -603,27 +608,40 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_ANALYZER_NONNULL = YES;
-				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++20";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				CODE_SIGN_IDENTITY = "iPhone Developer";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				COPY_PHASE_STRIP = NO;
 				DEBUG_INFORMATION_FORMAT = dwarf;
+				DEVELOPMENT_TEAM = FUJX4L72NH;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
-				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_C_LANGUAGE_STANDARD = c11;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_OPTIMIZATION_LEVEL = 0;
@@ -637,7 +655,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -649,35 +667,48 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_ANALYZER_NONNULL = YES;
-				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++20";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = NO;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				CODE_SIGN_IDENTITY = "iPhone Developer";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				COPY_PHASE_STRIP = NO;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				DEVELOPMENT_TEAM = FUJX4L72NH;
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
-				GCC_C_LANGUAGE_STANDARD = gnu99;
+				GCC_C_LANGUAGE_STANDARD = c11;
 				GCC_NO_COMMON_BLOCKS = YES;
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
+				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
@@ -690,7 +721,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES = NO;
-				CODE_SIGN_IDENTITY = "iPhone Developer";
+				DEVELOPMENT_TEAM = "";
 				INFOPLIST_FILE = AUInstrument/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = AUInstrument;
@@ -703,7 +734,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES = NO;
-				CODE_SIGN_IDENTITY = "iPhone Developer";
+				DEVELOPMENT_TEAM = "";
 				INFOPLIST_FILE = AUInstrument/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = AUInstrument;

AUInstrument/Audio Engine/AudioEngine.m

@@ -48,14 +48,14 @@ - (void) setupAUWithComponentDescription:(AudioComponentDescription)componentDes
                                              options:kAudioComponentInstantiation_LoadOutOfProcess
                                    completionHandler:^ (AVAudioUnit * __nullable audioUnit, NSError * __nullable error)
      {
-         _synthNode = audioUnit;
-         self.synth = _synthNode.audioUnit;
-         self.synthAU = _synthNode.AUAudioUnit;
+         self->_synthNode = audioUnit;
+         self.synth = self->_synthNode.audioUnit;
+         self.synthAU = self->_synthNode.AUAudioUnit;
 
-         [_engine attachNode:_synthNode];
+         [self->_engine attachNode:self->_synthNode];
 
          AVAudioFormat *stereoFormat = [[AVAudioFormat alloc] initStandardFormatWithSampleRate:hardwareFormat.sampleRate channels:2];
-         [_engine connect:_synthNode to:[_engine mainMixerNode] format:stereoFormat];
+         [self->_engine connect:self->_synthNode to:[self->_engine mainMixerNode] format:stereoFormat];
 
          [self startEngine];
 

AUInstrument/MIDI/MIDIConstants.h

@@ -9,7 +9,7 @@
 #ifndef MIDIConstants_h
 #define MIDIConstants_h
 
-typedef NS_ENUM(NSUInteger, MIDIMessageType)
+typedef NS_ENUM(NSUInteger, myMIDIMessageType)
 {
     /* Note off */
     MIDIMessageType_NoteOff = 0x80,

AUInstrument/MIDI/MIDILogs.h

@@ -11,9 +11,9 @@
 
 @import CoreMIDI;
 
-void printDevices();
-void printSources();
-void printDestinations();
+void printDevices(void);
+void printSources(void);
+void printDestinations(void);
 
 void LogMidiEventToConsole(uint8_t status,
                            uint8_t channel,

AUInstrument/MainViewController.m

@@ -84,13 +84,15 @@ - (void) connectParametersToControls
 
         _volumeParameter = [parameterTree valueForKey:volumeParamKey];
 
+        __weak __typeof(self) weakSelf = self;
         _parameterObserverToken = [parameterTree tokenByAddingParameterObserver:^(AUParameterAddress address, AUValue value) {
             dispatch_sync(dispatch_get_main_queue(), ^{
-                if (address == _volumeParameter.address)
-                {
-                    [self updateVolume];
+                __strong __typeof(weakSelf) Self = weakSelf;
+                if (Self) {
+                    if (address == Self->_volumeParameter.address) {
+                        [Self updateVolume];
+                    }
                 }
-
             });
         }];