Audaspace: add support for PulseAudio on Linux

This adds PulseAudio as audio backend on Linux.
PulseAudio is the main audio engine used on most,
if not all, Linux distributions today.

Ref T86590

1 files changed, 55 insertions, 0 deletions

diff --git a/extern/audaspace/CMakeLists.txt b/extern/audaspace/CMakeLists.txt
index 996d4b27911..92b1cbcb290 100644
--- a/extern/audaspace/CMakeLists.txt
+++ b/extern/audaspace/CMakeLists.txt
@@ -285,6 +285,10 @@ if(AUDASPACE_STANDALONE)
 	option(WITH_SDL "Build With SDL" TRUE)
 	option(WITH_STRICT_DEPENDENCIES "Error and abort instead of warning if a library is not found." FALSE)
 
+	if(NOT WIN32 AND NOT APPLE)
+		option(WITH_PULSEAUDIO "Build With PulseAudio" TRUE)
+	endif()
+
 	if(WITH_STRICT_DEPENDENCIES)
 		set(PACKAGE_OPTION REQUIRED)
 	endif()
@@ -306,10 +310,12 @@ if(AUDASPACE_STANDALONE)
 	cmake_dependent_option(PLUGIN_JACK "Build JACK Plugin" TRUE "WITH_JACK;SHARED_LIBRARY" FALSE)
 	cmake_dependent_option(PLUGIN_LIBSNDFILE "Build LibSndFile Plugin" TRUE "WITH_LIBSNDFILE;SHARED_LIBRARY" FALSE)
 	cmake_dependent_option(PLUGIN_OPENAL "Build OpenAL Plugin" TRUE "WITH_OPENAL;SHARED_LIBRARY" FALSE)
+	cmake_dependent_option(PLUGIN_PULSEAUDIO "Build PulseAudio Plugin" TRUE "WITH_PULSEAUDIO;SHARED_LIBRARY" FALSE)
 	cmake_dependent_option(PLUGIN_SDL "Build SDL Plugin" TRUE "WITH_SDL;SHARED_LIBRARY" FALSE)
 	cmake_dependent_option(WITH_PYTHON_MODULE "Build Python Module" TRUE "WITH_PYTHON" FALSE)
 	cmake_dependent_option(USE_SDL2 "Use SDL2 instead of 1 if available" TRUE "WITH_SDL" FALSE)
 	cmake_dependent_option(DYNLOAD_JACK "Dynamically load JACK" FALSE "WITH_JACK" FALSE)
+	cmake_dependent_option(DYNLOAD_PULSEAUDIO "Dynamically load PulseAudio" FALSE "WITH_PULSEAUDIO" FALSE)
 	cmake_dependent_option(WITH_BINDING_DOCS "Build C/Python HTML Documentation with Sphinx" TRUE "WITH_PYTHON_MODULE" FALSE)
 endif()
 
@@ -598,6 +604,42 @@ if(WITH_OPENAL)
 	endif()
 endif()
 
+# PulseAudio
+if(WITH_PULSEAUDIO)
+	if(AUDASPACE_STANDALONE)
+		find_package(LibPulse ${PACKAGE_OPTION})
+	endif()
+
+	if(LIBPULSE_FOUND)
+		set(PULSEAUDIO_SRC
+			plugins/pulseaudio/PulseAudioDevice.cpp
+			plugins/pulseaudio/PulseAudioLibrary.cpp
+		)
+		set(PULSEAUDIO_HDR
+			plugins/pulseaudio/PulseAudioDevice.h
+			plugins/pulseaudio/PulseAudioLibrary.h
+			plugins/pulseaudio/PulseAudioSymbols.h
+		)
+
+		if(DYNLOAD_PULSEAUDIO)
+			add_definitions(-DDYNLOAD_PULSEAUDIO)
+		endif()
+
+		if(NOT PLUGIN_PULSEAUDIO)
+			list(APPEND INCLUDE ${LIBPULSE_INCLUDE_DIR})
+			if(NOT DYNLOAD_PULSEAUDIO)
+				list(APPEND LIBRARIES ${LIBPULSE_LIBRARY})
+			endif()
+			list(APPEND SRC ${PULSEAUDIO_SRC})
+			list(APPEND HDR ${PULSEAUDIO_HDR})
+			list(APPEND STATIC_PLUGINS PulseAudioDevice)
+		endif()
+	else()
+		set(WITH_PULSEAUDIO FALSE CACHE BOOL "Build With PulseAudio" FORCE)
+		message(WARNING "PulseAudio not found, plugin will not be built.")
+	endif()
+endif()
+
 # Python
 if(WITH_PYTHON)
 	if(AUDASPACE_STANDALONE)
@@ -797,6 +839,19 @@ if(WITH_OPENAL AND PLUGIN_OPENAL)
 	install(TARGETS audopenal DESTINATION ${DEFAULT_PLUGIN_PATH})
 endif()
 
+if(WITH_PULSEAUDIO AND PLUGIN_PULSEAUDIO)
+	add_definitions(-DPULSEAUDIO_PLUGIN)
+	include_directories(${INCLUDE} ${LIBPULSE_INCLUDE_DIR})
+	add_library(audpulseaudio SHARED ${PULSEAUDIO_SRC} ${PULSEAUDIO_HDR} ${HDR})
+	set_target_properties(audpulseaudio PROPERTIES SOVERSION ${AUDASPACE_VERSION})
+	if(DYNLOAD_PULSEAUDIO)
+		target_link_libraries(audpulseaudio audaspace)
+	else()
+		target_link_libraries(audpulseaudio audaspace ${LIBPULSE_LIBRARY})
+	endif()
+	install(TARGETS audpulseaudio DESTINATION ${DEFAULT_PLUGIN_PATH})
+endif()
+
 if(WITH_SDL AND PLUGIN_SDL)
 	add_definitions(-DSDL_PLUGIN)
 	include_directories(${INCLUDE} ${SDL_INCLUDE_DIR})