Audio: STFT Process: Add new SOF module

app/boards/intel_adsp_ace15_mtpm.conf

@@ -15,6 +15,7 @@ CONFIG_COMP_MFCC=y
 CONFIG_COMP_MULTIBAND_DRC=y
 CONFIG_FORMAT_CONVERT_HIFI3=n
 CONFIG_SAMPLE_KEYPHRASE=y
+CONFIG_COMP_STFT_PROCESS=y
 
 # SOF / audio modules / mocks
 # This mock is part of official sof-bin releases because the CI that

app/boards/intel_adsp_ace20_lnl.conf

@@ -11,6 +11,7 @@ CONFIG_COMP_TESTER=m
 CONFIG_COMP_SRC_IPC4_FULL_MATRIX=y
 CONFIG_FORMAT_CONVERT_HIFI3=n
 CONFIG_SAMPLE_KEYPHRASE=y
+CONFIG_COMP_STFT_PROCESS=y
 
 # SOF / infrastructure
 CONFIG_AMS=y

app/boards/intel_adsp_ace30_ptl.conf

@@ -14,6 +14,7 @@ CONFIG_FORMAT_CONVERT_HIFI3=n
 # tests it can't use extra CONFIGs. See #9410, #8722 and #9386
 CONFIG_COMP_GOOGLE_RTC_AUDIO_PROCESSING=m
 CONFIG_GOOGLE_RTC_AUDIO_PROCESSING_MOCK=y
+CONFIG_COMP_STFT_PROCESS=y
 
 # SOF / infrastructure
 CONFIG_KCPS_DYNAMIC_CLOCK_CONTROL=n

app/boards/intel_adsp_ace30_wcl.conf

@@ -14,6 +14,7 @@ CONFIG_FORMAT_CONVERT_HIFI3=n
 # tests it can't use extra CONFIGs. See #9410, #8722 and #9386
 CONFIG_COMP_GOOGLE_RTC_AUDIO_PROCESSING=m
 CONFIG_GOOGLE_RTC_AUDIO_PROCESSING_MOCK=y
+CONFIG_COMP_STFT_PROCESS=y
 
 # SOF / infrastructure
 CONFIG_KCPS_DYNAMIC_CLOCK_CONTROL=n

src/arch/host/configs/library_defconfig

@@ -19,6 +19,7 @@ CONFIG_COMP_SEL=y
 CONFIG_COMP_SOUND_DOSE=y
 CONFIG_COMP_SRC=y
 CONFIG_COMP_SRC_IPC4_FULL_MATRIX=y
+CONFIG_COMP_STFT_PROCESS=y
 CONFIG_COMP_STUBS=y
 CONFIG_COMP_TDFB=y
 CONFIG_COMP_TONE=y

src/audio/CMakeLists.txt

@@ -86,6 +86,9 @@ if(NOT CONFIG_COMP_MODULE_SHARED_LIBRARY_BUILD)
 	if(CONFIG_COMP_SRC)
 		add_subdirectory(src)
 	endif()
+	if(CONFIG_COMP_STFT_PROCESS)
+		add_subdirectory(stft_process)
+	endif()
 	if(CONFIG_COMP_TDFB)
 		add_subdirectory(tdfb)
 	endif()

src/audio/Kconfig

@@ -144,6 +144,7 @@ rsource "selector/Kconfig"
 rsource "smart_amp/Kconfig"
 rsource "sound_dose/Kconfig"
 rsource "src/Kconfig"
+rsource "stft_process/Kconfig"
 rsource "tdfb/Kconfig"
 rsource "template/Kconfig"
 rsource "tensorflow/Kconfig"

src/audio/stft_process/CMakeLists.txt

@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: BSD-3-Clause
+
+if(CONFIG_COMP_STFT_PROCESS STREQUAL "m" AND DEFINED CONFIG_LLEXT)
+  add_subdirectory(llext ${PROJECT_BINARY_DIR}/stft_process_llext)
+  add_dependencies(app stft_process)
+else()
+  add_local_sources(sof stft_process.c)
+  add_local_sources(sof stft_process_setup.c)
+  add_local_sources(sof stft_process_common.c)
+  add_local_sources(sof stft_process-generic.c)
+
+  if(CONFIG_IPC_MAJOR_4)
+    add_local_sources(sof stft_process-ipc4.c)
+  endif()
+endif()

src/audio/stft_process/Kconfig

@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: BSD-3-Clause
+
+config COMP_STFT_PROCESS
+	tristate "Template example component"
+	default n
+	select MATH_FFT
+	select MATH_32BIT_FFT
+	select MATH_FFT_MULTI
+	help
+	  Select for stft_process component. Reason for existence
+	  is to provide a minimal component example and use as
+	  placeholder in processing pipelines. As example processing
+	  it swaps or reverses the channels when the switch control
+	  is enabled.

src/audio/stft_process/llext/CMakeLists.txt

@@ -0,0 +1,11 @@
+# Copyright (c) 2025 Intel Corporation.
+# SPDX-License-Identifier: Apache-2.0
+
+sof_llext_build("stft_process"
+	SOURCES	../stft_process.c
+		../stft_process_setup.c
+		../stft_process_common.c
+		../stft_process-generic.c
+		../stft_process-ipc4.c
+	LIB openmodules
+)

src/audio/stft_process/llext/llext.toml.h

@@ -0,0 +1,6 @@
+#include <tools/rimage/config/platform.toml>
+#define LOAD_TYPE "2"
+#include "../stft_process.toml"
+
+[module]
+count = __COUNTER__