audio: dts: move dts code to standalone folder

This was suggested in PR#8389. Since the module uses
module_interface, it doesn't have to put it under module_adaper/module/.
Move dts codes from src/audo/module_adapter/module/ to src/audio/codec.

Signed-off-by: Joe Cheng <joe.cheng@xperi.com>

src/audio/CMakeLists.txt

@@ -112,6 +112,9 @@ if(NOT CONFIG_COMP_MODULE_SHARED_LIBRARY_BUILD)
 	if(CONFIG_COMP_CHAIN_DMA)
 		add_local_sources(sof chain_dma.c)
 	endif()
+	if(CONFIG_DTS_CODEC)
+		add_subdirectory(codec)
+	endif()
 
 	return()
 endif()

src/audio/Kconfig

@@ -151,6 +151,8 @@ rsource "rtnr/Kconfig"
 
 rsource "mfcc/Kconfig"
 
+rsource "codec/Kconfig"
+
 endmenu # "Audio components"
 
 menu "Data formats"

src/audio/codec/CMakeLists.txt

@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: BSD-3-Clause
+
+if(CONFIG_DTS_CODEC)
+        add_local_sources(sof dts/dts.c)
+        target_compile_definitions(sof PRIVATE -DDTS_MATH_INT32 -DDTS_XTENSA)
+        if (CONFIG_DTS_CODEC_STUB)
+                add_local_sources(sof dts/dts_stub.c)
+        else()
+                sof_add_static_library(DtsCodec
+                       ${SOF_ROOT_SOURCE_DIRECTORY}/third_party/lib/libdts-sof-interface-i32.a)
+        endif()
+endif()

src/audio/codec/Kconfig

@@ -0,0 +1,20 @@
+# SPDX-License-Identifier: BSD-3-Clause
+
+config DTS_CODEC
+        bool "DTS codec"
+        default n
+        select DTS_CODEC_STUB if COMP_STUBS
+        help
+          Select to include DTS codec.
+          In order to compile with this option enabled, a pre-compiled static library
+          must be provided by DTS for your target platform. If this library is not present
+          then compilation errors will occur.
+          For more information, please contact sales@xperi.com
+
+config DTS_CODEC_STUB
+        bool "DTS codec stub"
+        depends on DTS_CODEC
+        default n
+        help
+          Select to include DTS codec stub library. This is meant for testing and CI
+          purposes only.

src/audio/module_adapter/CMakeLists.txt

@@ -63,16 +63,5 @@ if(NOT CONFIG_COMP_MODULE_SHARED_LIBRARY_BUILD)
 	# folder with Waves API must be among include directories
 	endif()
 
-	if(CONFIG_DTS_CODEC)
-		add_local_sources(sof module/dts/dts.c)
-		target_compile_definitions(sof PRIVATE -DDTS_MATH_INT32 -DDTS_XTENSA)
-		if (CONFIG_DTS_CODEC_STUB)
-			add_local_sources(sof module/dts/dts_stub.c)
-		else()
-			sof_add_static_library(DtsCodec
-                               ${SOF_ROOT_SOURCE_DIRECTORY}/third_party/lib/libdts-sof-interface-i32.a)
-		endif()
-	endif()
-
 	return()
 endif()

src/audio/module_adapter/Kconfig

@@ -176,25 +176,6 @@ endif # Cadence
 		Select to build the waves codec with a stub file. This should only be used for
 		testing or CI.
 
-	config DTS_CODEC
-	bool "DTS codec"
-	default n
-	select DTS_CODEC_STUB if COMP_STUBS
-	help
-		Select to include DTS codec.
-		In order to compile with this option enabled, a pre-compiled static library
-		must be provided by DTS for your target platform. If this library is not present
-		then compilation errors will occur.
-		For more information, please contact sales@xperi.com
-
-	config DTS_CODEC_STUB
-	bool "DTS codec stub"
-	depends on DTS_CODEC
-	default n
-	help
-		Select to include DTS codec stub library. This is meant for testing and CI
-		purposes only.
-
 	config INTEL_MODULES
 	bool "Intel modules"
 	default n

zephyr/CMakeLists.txt

@@ -786,12 +786,12 @@ zephyr_library_sources_ifdef(CONFIG_COMP_GOOGLE_HOTWORD_DETECT
 )
 
 zephyr_library_sources_ifdef(CONFIG_DTS_CODEC
-	${SOF_AUDIO_PATH}/module_adapter/module/dts/dts.c
+	${SOF_AUDIO_PATH}/codec/dts/dts.c
 )
 if (CONFIG_DTS_CODEC)
 	if (CONFIG_DTS_CODEC_STUB)
 		zephyr_library_sources(
-			${SOF_AUDIO_PATH}/module_adapter/module/dts/dts_stub.c
+			${SOF_AUDIO_PATH}/codec/dts/dts_stub.c
 		)
 	else()
 		zephyr_library_import(DtsCodec