audio: bt_codec, topology2: add BT Transparent DSP codecs and Deepbuffer Bluetooth (PCM 36)

app/boards/intel_adsp_ace15_mtpm.conf

@@ -72,6 +72,7 @@ CONFIG_DAI_DMIC_HAS_MULTIPLE_LINE_SYNC=y
 CONFIG_DAI_DMIC_HW_IOCLK=38400000
 CONFIG_DAI_INIT_PRIORITY=70
 CONFIG_DMA_DW_LLI_POOL_SIZE=50
+CONFIG_DMA_DW_FIFO_PARTITION=y
 CONFIG_DMA_INTEL_ADSP_GPDMA=y
 CONFIG_MEMORY_WIN_2_SIZE=12288
 CONFIG_MM_DRV_INTEL_ADSP_TLB_REMAP_UNUSED_RAM=y

app/boards/intel_adsp_ace30_ptl.conf

@@ -15,6 +15,7 @@ CONFIG_FORMAT_CONVERT_HIFI3=n
 CONFIG_COMP_GOOGLE_RTC_AUDIO_PROCESSING=m
 CONFIG_GOOGLE_RTC_AUDIO_PROCESSING_MOCK=y
 CONFIG_COMP_STFT_PROCESS=y
+CONFIG_COMP_BT_CODEC=y
 
 # SOF / infrastructure
 CONFIG_KCPS_DYNAMIC_CLOCK_CONTROL=n

app/boards/intel_adsp_ace30_wcl.conf

@@ -15,6 +15,7 @@ CONFIG_FORMAT_CONVERT_HIFI3=n
 CONFIG_COMP_GOOGLE_RTC_AUDIO_PROCESSING=m
 CONFIG_GOOGLE_RTC_AUDIO_PROCESSING_MOCK=y
 CONFIG_COMP_STFT_PROCESS=y
+CONFIG_COMP_BT_CODEC=y
 
 # SOF / infrastructure
 CONFIG_KCPS_DYNAMIC_CLOCK_CONTROL=n

src/audio/CMakeLists.txt

@@ -178,3 +178,7 @@ else() ### library, e.g. testbench ###
 		)
 	endif()
 endif()
+
+if(CONFIG_COMP_BT_CODEC)
+	add_subdirectory(bt_codec)
+endif()

src/audio/Kconfig

@@ -451,4 +451,6 @@ config DAI_VERBOSE_GLITCH_WARNINGS
 	  always emit a warning. This option useful to debug issues with
 	  DAI DMA operation and issues with low-latency scheduling.
 
+rsource "bt_codec/Kconfig"
+
 endmenu

src/audio/bt_codec/CMakeLists.txt

@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: BSD-3-Clause
+
+set(LIBLC3_DIR "")
+if(DEFINED ZEPHYR_LIBLC3_MODULE_DIR)
+	if(EXISTS "${ZEPHYR_LIBLC3_MODULE_DIR}/include/lc3.h")
+		set(LIBLC3_DIR "${ZEPHYR_LIBLC3_MODULE_DIR}")
+	endif()
+endif()
+
+if("${LIBLC3_DIR}" STREQUAL "")
+	cmake_path(SET LIBLC3_DIR NORMALIZE "${CMAKE_CURRENT_LIST_DIR}/../../../../modules/lib/liblc3")
+endif()
+
+zephyr_include_directories(
+	${LIBLC3_DIR}/include
+	${LIBLC3_DIR}/src
+)
+
+set(LIBLC3_SOURCES
+	${LIBLC3_DIR}/src/attdet.c
+	${LIBLC3_DIR}/src/bits.c
+	${LIBLC3_DIR}/src/bwdet.c
+	${LIBLC3_DIR}/src/energy.c
+	${LIBLC3_DIR}/src/lc3.c
+	${LIBLC3_DIR}/src/ltpf.c
+	${LIBLC3_DIR}/src/mdct.c
+	${LIBLC3_DIR}/src/plc.c
+	${LIBLC3_DIR}/src/sns.c
+	${LIBLC3_DIR}/src/spec.c
+	${LIBLC3_DIR}/src/tables.c
+	${LIBLC3_DIR}/src/tns.c
+)
+
+zephyr_compile_definitions(
+	LC3_PLUS=0
+	LC3_PLUS_HR=0
+)
+
+add_local_sources(sof
+	bt_codec.c
+	bt_codec_algos.c
+	${LIBLC3_SOURCES}
+)
+
+set(BT_CODEC_COMPILE_OPTIONS
+	-O3
+	-ffast-math
+	-fno-finite-math-only
+	-Wno-array-bounds
+	-Wno-double-promotion
+	-include
+	${CMAKE_CURRENT_LIST_DIR}/lc3_math_shim.h
+)
+
+# When building with Clang on platforms where hardware FPU is disabled (e.g.
+# ACE 3.0 PTL / WCL with CONFIG_FPU=n), strip the Xtensa FP0 feature so liblc3
+# and bt_codec emit software floating-point calls instead of hardware FP0
+# instructions that fault when CPENABLE bit 0 is cleared.
+if(CMAKE_C_COMPILER_ID MATCHES "Clang" AND NOT CONFIG_FPU)
+	list(APPEND BT_CODEC_COMPILE_OPTIONS
+		-Xclang
+		-target-feature
+		-Xclang
+		-fp
+	)
+endif()
+
+set_source_files_properties(
+	${CMAKE_CURRENT_LIST_DIR}/bt_codec.c
+	${CMAKE_CURRENT_LIST_DIR}/bt_codec_algos.c
+	${LIBLC3_SOURCES}
+	TARGET_DIRECTORY modules_sof
+	PROPERTIES COMPILE_OPTIONS "${BT_CODEC_COMPILE_OPTIONS}"
+)

src/audio/bt_codec/Kconfig

@@ -0,0 +1,11 @@
+# SPDX-License-Identifier: BSD-3-Clause
+
+config COMP_BT_CODEC
+	bool "Bluetooth Transparent Mode DSP Codec components (LC3, mSBC, G.722, SB4)"
+	depends on COMP_MODULE_ADAPTER && IPC_MAJOR_4
+	help
+	  Select to include Bluetooth Transparent Mode (0x03) DSP audio codec
+	  offload components for SSP2-BT playback and capture pipelines.
+	  Provides bt_lc3 (Zephyr liblc3 7.5 ms codec), bt_msbc (Bluetooth HFP
+	  H2-framed mSBC), bt_g722 (ITU-T Rec. G.722 SB-ADPCM), and bt_sb4
+	  (experimental 4-band tree-QMF subband ADPCM).