Add iOS platform support

.github/workflows/build.yml

@@ -66,9 +66,13 @@ jobs:
           curl -LO https://github.com/ValveSoftware/steam-audio/releases/download/v4.8.0/steamaudio_4.8.0.zip
           unzip steamaudio_4.8.0.zip 'steamaudio/lib/**/*' -d src/lib
           cp -r src/lib/steamaudio/lib/osx/* project/addons/godot-steam-audio/bin/
+          cp src/lib/steamaudio/lib/ios/* project/addons/godot-steam-audio/bin/ios/
+      - name: build-ios-deps
+        run: |
+          make ios-deps
       - name: build-ext
         run: |
-          make macos-release
+          make macos-release && make ios-release
       - uses: actions/upload-artifact@v4
         with:
           name: godot-steam-audio-macos-${{ env.COMMIT_SHORT_SHA }}

.gitmodules

@@ -6,3 +6,9 @@
 	path = src/lib/steamaudio
 	url = https://github.com/ValveSoftware/steam-audio
 	branch = 4.8.0
+[submodule "src/lib/pffft"]
+	path = src/lib/pffft
+	url = https://github.com/marton78/pffft.git
+[submodule "src/lib/libmysofa"]
+	path = src/lib/libmysofa
+	url = https://github.com/hoene/libmysofa.git

Makefile

@@ -9,6 +9,7 @@ install-steam-audio:
 	cp src/lib/steamaudio/lib/osx/* project/addons/godot-steam-audio/bin/
 	cp src/lib/steamaudio/lib/android-armv8/* project/addons/godot-steam-audio/bin/android/arm64
 	cp src/lib/steamaudio/lib/android-x64/* project/addons/godot-steam-audio/bin/android/x86_64
+	cp src/lib/steamaudio/lib/ios/* project/addons/godot-steam-audio/bin/ios/
 
 release:
 	scons platform=android arch=arm64 target=template_release && scons platform=android arch=x86_64 target=template_release && \
@@ -28,3 +29,30 @@ macos-release:
 	cp -r ./project/* ./godot-steam-audio-demo
 	rm -rf ./godot-steam-audio-demo/addons/godot-steam-audio/bin/libphonon.so.dbg
 	cp -r ./godot-steam-audio-demo/addons ./godot-steam-audio
+
+ios-deps:
+	# Build pffft for iOS arm64
+	IOS_SDK=$$(xcrun --sdk iphoneos --show-sdk-path) && \
+		xcrun --sdk iphoneos clang -arch arm64 -isysroot "$$IOS_SDK" -miphoneos-version-min=12.0 -O2 -DPFFFT_ENABLE_NEON \
+			-c src/lib/pffft/pffft.c -o src/lib/pffft/pffft.o && \
+		xcrun --sdk iphoneos clang -arch arm64 -isysroot "$$IOS_SDK" -miphoneos-version-min=12.0 -O2 -DPFFFT_ENABLE_NEON \
+			-c src/lib/pffft/pffft_common.c -o src/lib/pffft/pffft_common.o && \
+		ar rcs project/addons/godot-steam-audio/bin/ios/libpffft.a src/lib/pffft/pffft.o src/lib/pffft/pffft_common.o
+	# Build libmysofa for iOS arm64
+	IOS_SDK=$$(xcrun --sdk iphoneos --show-sdk-path) && \
+		cmake -S src/lib/libmysofa -B src/lib/libmysofa/build-ios \
+			-DCMAKE_SYSTEM_NAME=iOS -DCMAKE_OSX_ARCHITECTURES=arm64 \
+			-DCMAKE_OSX_DEPLOYMENT_TARGET=12.0 -DCMAKE_OSX_SYSROOT="$$IOS_SDK" \
+			-DBUILD_TESTS=OFF -DBUILD_SHARED_LIBS=OFF && \
+		cmake --build src/lib/libmysofa/build-ios --config Release
+	cp src/lib/libmysofa/build-ios/src/libmysofa.a project/addons/godot-steam-audio/bin/ios/
+
+ios-release: ios-deps
+	scons platform=ios arch=arm64 target=template_debug && scons platform=ios arch=arm64 target=template_release
+	cp src/lib/godot-cpp/bin/libgodot-cpp.ios.template_debug.arm64.a project/addons/godot-steam-audio/bin/ios/
+	cp src/lib/godot-cpp/bin/libgodot-cpp.ios.template_release.arm64.a project/addons/godot-steam-audio/bin/ios/
+	mkdir -p godot-steam-audio-demo
+	mkdir -p godot-steam-audio
+	cp -r ./project/* ./godot-steam-audio-demo
+	rm -rf ./godot-steam-audio-demo/addons/godot-steam-audio/bin/libphonon.so.dbg
+	cp -r ./godot-steam-audio-demo/addons ./godot-steam-audio

SConstruct

@@ -47,14 +47,22 @@ elif env["platform"] == "android":
         env.Append(LIBPATH=[f'{steam_audio_lib_path}/android-x64'])
     if env["arch"] == "x86_32":
         env.Append(LIBPATH=[f'{steam_audio_lib_path}/android-x32'])
+elif env["platform"] == "ios":
+    env.Append(LIBPATH=[f'{steam_audio_lib_path}/ios'])
 
 if env["target"] in ["editor", "template_debug"]:
     doc_data = env.GodotCPPDocData("src/gen/doc_data.gen.cpp", source=Glob("doc_classes/*.xml"))
     sources.append(doc_data)
 
-library = env.SharedLibrary(
-    "project/addons/godot-steam-audio/bin/libgodot-steam-audio{}{}".format(env["suffix"], env["SHLIBSUFFIX"]),
-    source=sources,
-)
+if env["platform"] == "ios":
+    library = env.StaticLibrary(
+        "project/addons/godot-steam-audio/bin/libgodot-steam-audio{}{}".format(env["suffix"], env["LIBSUFFIX"]),
+        source=sources,
+    )
+else:
+    library = env.SharedLibrary(
+        "project/addons/godot-steam-audio/bin/libgodot-steam-audio{}{}".format(env["suffix"], env["SHLIBSUFFIX"]),
+        source=sources,
+    )
 
 Default(library)

project/addons/godot-steam-audio/bin/libgodot-steam-audio.gdextension

@@ -15,6 +15,8 @@ windows.x86_64.debug = "res://addons/godot-steam-audio/bin/libgodot-steam-audio.
 windows.x86_64.release = "res://addons/godot-steam-audio/bin/libgodot-steam-audio.windows.template_release.x86_64.dll"
 macos.debug = "res://addons/godot-steam-audio/bin/libgodot-steam-audio.macos.template_debug.universal.dylib"
 macos.release = "res://addons/godot-steam-audio/bin/libgodot-steam-audio.macos.template_release.universal.dylib"
+ios.arm64.debug = "res://addons/godot-steam-audio/bin/libgodot-steam-audio.ios.template_debug.arm64.a"
+ios.arm64.release = "res://addons/godot-steam-audio/bin/libgodot-steam-audio.ios.template_release.arm64.a"
 
 [icons]
 
@@ -62,3 +64,15 @@ android.arm64.debug = {
 android.arm64.release = {
     "res://addons/godot-steam-audio/bin/android/arm64/libphonon.so": ""
 }
+ios.arm64.debug = {
+    "res://addons/godot-steam-audio/bin/ios/libphonon.a": "",
+    "res://addons/godot-steam-audio/bin/ios/libgodot-cpp.ios.template_debug.arm64.a": "",
+    "res://addons/godot-steam-audio/bin/ios/libpffft.a": "",
+    "res://addons/godot-steam-audio/bin/ios/libmysofa.a": ""
+}
+ios.arm64.release = {
+    "res://addons/godot-steam-audio/bin/ios/libphonon.a": "",
+    "res://addons/godot-steam-audio/bin/ios/libgodot-cpp.ios.template_release.arm64.a": "",
+    "res://addons/godot-steam-audio/bin/ios/libpffft.a": "",
+    "res://addons/godot-steam-audio/bin/ios/libmysofa.a": ""
+}

src/server_init.cpp

@@ -85,6 +85,10 @@ IPLSceneSettings create_scene_cfg(IPLContext ctx) {
 			OS::get_singleton()->get_name() == "Android") {
 		SteamAudioConfig::scene_type = IPL_SCENETYPE_DEFAULT;
 		SteamAudio::log(SteamAudio::log_info, "Embree is not supported on Android, reverting to default scene type.");
+	} else if (SteamAudioConfig::scene_type == IPL_SCENETYPE_EMBREE &&
+			OS::get_singleton()->get_name() == "iOS") {
+		SteamAudioConfig::scene_type = IPL_SCENETYPE_DEFAULT;
+		SteamAudio::log(SteamAudio::log_info, "Embree is not supported on iOS, reverting to default scene type.");
 	}
 
 	scene_cfg.type = SteamAudioConfig::scene_type;