Bluetooth: LC3: Addition of liblc3codec for LE-Audio as a module

Initial addition of the LC3 codec as a module. Usage of the module
will be seperate commits.

Even though this codec is a generic audio codec, it is tagged with
Bluetooth: as it can only be used for LE-Audio. Using the codec for
other purposes is a violation of the granted rights for the codec.

Signed-off-by: Casper Bonde <casper_bonde@bose.com>

modules/Kconfig

@@ -53,6 +53,9 @@ comment "hal_gigadevice module not available."
 comment "hal_nordic module not available."
 	depends on !ZEPHYR_HAL_NORDIC_MODULE
 
+comment "liblc3codec module not available."
+	depends on !ZEPHYR_LIBLC3CODEC_MODULE
+
 comment "LittleFS module not available."
 	depends on !ZEPHYR_LITTLEFS_MODULE
 

modules/liblc3codec/CMakeLists.txt

@@ -0,0 +1,22 @@
+if(CONFIG_LIBLC3CODEC)
+
+zephyr_library_named(liblc3codec)
+zephyr_library_compile_options(-O3 -ffast-math -Wno-array-bounds)
+
+zephyr_include_directories(${ZEPHYR_LIBLC3CODEC_MODULE_DIR}/include)
+zephyr_include_directories(${ZEPHYR_LIBLC3CODEC_MODULE_DIR}/src)
+
+zephyr_library_sources(${ZEPHYR_LIBLC3CODEC_MODULE_DIR}/src/attdet.c)
+zephyr_library_sources(${ZEPHYR_LIBLC3CODEC_MODULE_DIR}/src/bits.c)
+zephyr_library_sources(${ZEPHYR_LIBLC3CODEC_MODULE_DIR}/src/bwdet.c)
+zephyr_library_sources(${ZEPHYR_LIBLC3CODEC_MODULE_DIR}/src/energy.c)
+zephyr_library_sources(${ZEPHYR_LIBLC3CODEC_MODULE_DIR}/src/lc3.c)
+zephyr_library_sources(${ZEPHYR_LIBLC3CODEC_MODULE_DIR}/src/ltpf.c)
+zephyr_library_sources(${ZEPHYR_LIBLC3CODEC_MODULE_DIR}/src/mdct.c)
+zephyr_library_sources(${ZEPHYR_LIBLC3CODEC_MODULE_DIR}/src/plc.c)
+zephyr_library_sources(${ZEPHYR_LIBLC3CODEC_MODULE_DIR}/src/sns.c)
+zephyr_library_sources(${ZEPHYR_LIBLC3CODEC_MODULE_DIR}/src/spec.c)
+zephyr_library_sources(${ZEPHYR_LIBLC3CODEC_MODULE_DIR}/src/tables.c)
+zephyr_library_sources(${ZEPHYR_LIBLC3CODEC_MODULE_DIR}/src/tns.c)
+
+endif()

modules/liblc3codec/Kconfig

@@ -0,0 +1,8 @@
+# Copyright (c) 2022 Bose Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+config LIBLC3CODEC
+	bool "liblc3codec Support"
+	depends on FPU
+	help
+	  This option enables the Android liblc3codec library for Bluetooth LE Audio

west.yml

@@ -153,6 +153,9 @@ manifest:
       path: modules/hal/libmetal
       groups:
         - hal
+    - name: liblc3codec
+      revision: 3951cf1b71ff3be086c9b9b595e473e12301337c
+      path: modules/lib/liblc3codec
     - name: littlefs
       path: modules/fs/littlefs
       groups: