Start phonon spatializer;

CMakeLists.txt

@@ -22,6 +22,7 @@ option(LOVR_USE_OCULUS "Enable the LibOVR backend for the headset module (be sur
 option(LOVR_USE_VRAPI "Enable the VrApi backend for the headset module" OFF)
 option(LOVR_USE_PICO "Enable the Pico backend for the headset module" OFF)
 option(LOVR_USE_DESKTOP_HEADSET "Enable the keyboard/mouse backend for the headset module" ON)
+option(LOVR_USE_STEAM_AUDIO "Enable the Steam Audio spatializer (be sure to also set LOVR_STEAM_AUDIO_PATH)" OFF)
 option(LOVR_USE_OCULUS_AUDIO "Enable the Oculus Audio spatializer (be sure to also set LOVR_OCULUS_AUDIO_PATH)" OFF)
 option(LOVR_USE_LINUX_EGL "Use the EGL graphics extension on Linux" OFF)
 
@@ -249,6 +250,14 @@ if(LOVR_ENABLE_THREAD AND NOT (WIN32 OR EMSCRIPTEN))
   set(LOVR_PTHREADS Threads::Threads)
 endif()
 
+# Steam Audio
+if(LOVR_USE_STEAM_AUDIO)
+  if(NOT LOVR_STEAM_AUDIO_PATH)
+    message(FATAL_ERROR "LOVR_USE_STEAM_AUDIO requires the LOVR_STEAM_AUDIO_PATH to be set to the location of the Steam Audio folder")
+  endif()
+  include_directories("${STEAM_AUDIO_PATH}/include")
+endif()
+
 # Oculus Audio
 if(LOVR_USE_OCULUS_AUDIO)
   if(NOT LOVR_OCULUS_AUDIO_PATH)
@@ -349,6 +358,10 @@ if(LOVR_ENABLE_AUDIO)
     src/api/l_audio_source.c
   )
 
+  if(LOVR_USE_STEAM_AUDIO)
+    target_compile_definitions(lovr PRIVATE LOVR_ENABLE_PHONON)
+    target_sources(lovr PRIVATE src/modules/audio/spatializer_phonon.c)
+  endif()
 
   if(LOVR_USE_OCULUS_AUDIO)
     target_compile_definitions(lovr PRIVATE LOVR_ENABLE_OCULUS_AUDIO)

Tupfile

@@ -13,6 +13,7 @@ SRC += src/core/zip.c
 # modules
 SRC_@(AUDIO) += src/modules/audio/audio.c
 SRC_@(AUDIO) += src/modules/audio/spatializer_simple.c
+SRC_@(AUDIO)@(STEAM_AUDIO) += src/modules/audio/spatializer_phonon.c
 SRC_@(AUDIO)@(OCULUS_AUDIO) += src/modules/audio/spatializer_oculus.c
 SRC_@(DATA) += src/modules/data/*.c
 SRC_@(EVENT) += src/modules/event/*.c

Tuprules.tup

@@ -51,6 +51,7 @@ CFLAGS_@(WEBXR) += -DLOVR_USE_WEBXR
 
 ## Spatializer backends
 CFLAGS_@(OCULUS_AUDIO) += -DLOVR_ENABLE_OCULUS_AUDIO
+CFLAGS_@(STEAM_AUDIO) += -DLOVR_ENABLE_PHONON
 
 ifeq (@(PLATFORM),)
 PLATFORM = @(TUP_PLATFORM)
@@ -245,6 +246,12 @@ ifneq (@(CMAKE_DEPS),)
   LIB_@(OCULUS_AUDIO)_$(win32) += @(OCULUS_AUDIO_PATH)/Lib/x64/ovraudio64.dll
   LIB_@(OCULUS_AUDIO)_$(linux) += @(OCULUS_AUDIO_PATH)/Lib/Linux64/libovraudio64.so
   LIB_@(OCULUS_AUDIO)_$(android) += @(OCULUS_AUDIO_PATH)/Lib/Android/arm64-v8a/libovraudio64.so
+
+  # Phonon
+  CFLAGS_@(STEAM_AUDIO) += -I@(STEAM_AUDIO_PATH)/include
+  LIBS_@(STEAM_AUDIO)_$(win32) += @(STEAM_AUDIO_PATH)/lib/Windows/x64/phonon.dll
+  LIBS_@(STEAM_AUDIO)_$(linux) += @(STEAM_AUDIO_PATH)/lib/Linux/x64/libphonon.so
+  LIBS_@(STEAM_AUDIO)_$(android) += @(STEAM_AUDIO_PATH)/lib/Android/x64/libphonon.so
 endif
 
 LIBS += $(LIBS_y) $(LIBS_y_y)

src/modules/audio/audio.c

@@ -174,6 +174,9 @@ static void onCapture(ma_device* device, void* output, const void* input, uint32
 static const ma_device_callback_proc callbacks[] = { onPlayback, onCapture };
 
 static Spatializer* spatializers[] = {
+#ifdef LOVR_ENABLE_PHONON
+  &phononSpatializer,
+#endif
 #ifdef LOVR_ENABLE_OCULUS_AUDIO
   &oculusSpatializer,
 #endif

src/modules/audio/spatializer.h

@@ -24,6 +24,9 @@ typedef struct {
   const char* name;
 } Spatializer;
 
+#ifdef LOVR_ENABLE_PHONON
+extern Spatializer phononSpatializer;
+#endif
 #ifdef LOVR_ENABLE_OCULUS_AUDIO
 extern Spatializer oculusSpatializer;
 #endif

src/modules/audio/spatializer_phonon.c

@@ -0,0 +1,41 @@
+#include "spatializer.h"
+#include <phonon.h>
+
+bool phonon_init(SpatializerConfig config) {
+  return false;
+}
+
+void phonon_destroy() {
+  //
+}
+
+uint32_t phonon_apply(Source* source, const float* input, float* output, uint32_t frames, uint32_t _frames) {
+  return 0;
+}
+
+uint32_t phonon_tail(float* scratch, float* output, uint32_t frames) {
+  return 0;
+}
+
+void phonon_setListenerPose(float position[4], float orientation[4]) {
+  //
+}
+
+void phonon_sourceCreate(Source* source) {
+  //
+}
+
+void phonon_sourceDestroy(Source* source) {
+  //
+}
+
+Spatializer phononSpatializer = {
+  .init = phonon_init,
+  .destroy = phonon_destroy,
+  .apply = phonon_apply,
+  .tail = phonon_tail,
+  .setListenerPose = phonon_setListenerPose,
+  .sourceCreate = phonon_sourceCreate,
+  .sourceDestroy = phonon_sourceDestroy,
+  .name = "phonon"
+};

tup.config.default

@@ -49,6 +49,8 @@ CONFIG_WEBXR=n
 CONFIG_OCULUS_PATH=
 
 ## Spatializer backends
+CONFIG_STEAM_AUDIO=n
+CONFIG_STEAM_AUDIO_PATH=
 CONFIG_OCULUS_AUDIO=n
 CONFIG_OCULUS_AUDIO_PATH=