audio: codec_adapter: add DAX audio processing module

* Add DAX audio processing module
* Add topology support for MTL platform
* Add testbench topology support

Signed-off-by: Jun Lai <jun.lai@dolby.com>

Author: checkupup

app/overlays/mtl/dax_overlay.conf

@@ -0,0 +1,3 @@
+CONFIG_COMP_MODULE_ADAPTER=y
+CONFIG_COMP_DOLBY_DAX_AUDIO_PROCESSING=y
+CONFIG_COMP_DOLBY_DAX_AUDIO_PROCESSING_MOCK=n

src/arch/host/configs/library_defconfig

@@ -2,6 +2,7 @@ CONFIG_COMP_ARIA=y
 CONFIG_COMP_ASRC=y
 CONFIG_COMP_CROSSOVER=y
 CONFIG_COMP_DCBLOCK=y
+CONFIG_COMP_DOLBY_DAX_AUDIO_PROCESSING=y
 CONFIG_COMP_DRC=y
 CONFIG_COMP_FIR=y
 CONFIG_COMP_GOOGLE_RTC_AUDIO_PROCESSING=y

src/audio/module_adapter/CMakeLists.txt

@@ -25,6 +25,21 @@ if(zephyr) ###  Zephyr ###
 		zephyr_library_import(xa_mp3_enc ${CONFIG_CADENCE_CODEC_MP3_ENC_LIB})
 	endif()
 
+	if (CONFIG_COMP_DOLBY_DAX_AUDIO_PROCESSING)
+		zephyr_library_sources(
+			module/dolby/dax.c
+		)
+		if (CONFIG_COMP_DOLBY_DAX_AUDIO_PROCESSING_MOCK)
+			zephyr_library_sources(
+				module/dolby/dax_mock.c
+			)
+		else()
+			target_link_libraries(SOF INTERFACE m)
+			target_link_libraries(SOF INTERFACE c)
+			zephyr_library_import(dax_effect ${sof_top_dir}/third_party/lib/libdax.a)
+		endif()
+	endif()
+
 	zephyr_include_directories_ifdef(CONFIG_LIBRARY_MANAGER
 		${SOF_SRC_PATH}/include/sof/audio/module_adapter/iadk/
 		${SOF_SRC_PATH}/include/sof/audio/module_adapter/library/
@@ -112,6 +127,15 @@ if(NOT CONFIG_COMP_MODULE_SHARED_LIBRARY_BUILD)
 
 	endif()
 
+	if(CONFIG_COMP_DOLBY_DAX_AUDIO_PROCESSING)
+		add_local_sources(sof module/dolby/dax.c)
+		if (CONFIG_COMP_DOLBY_DAX_AUDIO_PROCESSING_MOCK)
+			add_local_sources(sof module/dolby/dax_mock.c)
+		else()
+			sof_add_static_library(dax_effect ${sof_top_dir}/third_party/lib/libdax.a)
+		endif()
+	endif()
+
 	if(CONFIG_PASSTHROUGH_CODEC)
 		add_local_sources(sof module/passthrough.c)
 	endif()

src/audio/module_adapter/Kconfig

@@ -175,6 +175,23 @@ if CADENCE_CODEC
 
 endif # Cadence
 
+	config COMP_DOLBY_DAX_AUDIO_PROCESSING
+		bool "Dolby DAX audio processing component"
+		default n
+		help
+		  Select to include Dolby DAX component. Dolby DAX component implements DAX API.
+		  API definition together with pre-compiled library is shared by Dolby.
+		  If library is not provided, COMP_DOLBY_DAX_AUDIO_PROCESSING_MOCK must be true,
+		  then the input will be copied to the output.
+
+	config COMP_DOLBY_DAX_AUDIO_PROCESSING_MOCK
+		bool "Dolby DAX audio processing component mock"
+		default y if COMP_STUBS
+		depends on COMP_DOLBY_DAX_AUDIO_PROCESSING
+		help
+		  Mock DAX audio processing. It allows for compilation check and basic audio
+		  flow checking.
+
 	config PASSTHROUGH_CODEC
 		bool "Passthrough codec"
 		help