audio: igo: add igo stub library

Added for CI and fuzz testing

Also remove exec permissions on related source files

Signed-off-by: Curtis Malainey <cujomalainey@chromium.org>

src/audio/Kconfig

@@ -478,12 +478,22 @@ config COMP_LEGACY_INTERFACE
 config COMP_IGO_NR
 	bool "IGO NR component"
 	select COMP_BLOB
+	select COMP_IGO_NR_STUB if COMP_STUBS
 	default n
 	help
 	  This option enables Intelligo non-speech noise reduction. The feature links to a proprietary
 	  binary libigonr.a that currently is supported on different Xtensa DSP platforms. Please email
 	  info@intelli-go.com for any questions about the binary.
 
+config COMP_IGO_NR_STUB
+	bool "IGO NR component"
+	select COMP_BLOB
+	depends on COMP_IGO_NR
+	default n
+	help
+	  This option builds the IGO adapter with a stub library, it should only be used for
+	  testing or CI purposes.
+
 config COMP_RTNR
 	bool "RTNR component"
 	select COMP_BLOB

src/audio/igo_nr/CMakeLists.txt

@@ -1,4 +1,8 @@
 # SPDX-License-Identifier: BSD-3-Clause
 
 add_local_sources(sof igo_nr.c)
+if (CONFIG_COMP_IGO_NR_STUB)
+add_local_sources(sof igo_nr_stub.c)
+else ()
 sof_add_static_library(IGOChrome ${CMAKE_CURRENT_LIST_DIR}/libigonr.a)
+endif ()

src/audio/igo_nr/igo_nr_stub.c

@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: BSD-3-Clause
+//
+// Copyright(c) 2023 Google LLC. All rights reserved.
+//
+// Author: Curtis Malainey <cujomalainey@chromium.org>
+
+#include <sof/audio/igo_nr/igo_nr_comp.h>
+
+enum IgoRet IgoLibGetInfo(struct IgoLibInfo *info)
+{
+	return IGO_RET_OK;
+}
+
+enum IgoRet IgoLibInit(void *handle,
+		       const struct IgoLibConfig *config,
+		       void *param)
+{
+	return IGO_RET_OK;
+}
+
+enum IgoRet IgoLibProcess(void *handle,
+			  const struct IgoStreamData *in,
+			  const struct IgoStreamData *ref,
+			  const struct IgoStreamData *out)
+{
+	return IGO_RET_OK;
+}

zephyr/CMakeLists.txt

@@ -682,6 +682,10 @@ zephyr_library_sources_ifdef(CONFIG_COMP_IGO_NR
 	${SOF_AUDIO_PATH}/igo_nr/igo_nr.c
 )
 
+zephyr_library_sources_ifdef(CONFIG_COMP_IGO_NR_STUB
+	${SOF_AUDIO_PATH}/igo_nr/igo_nr_stub.c
+)
+
 zephyr_library_sources_ifdef(CONFIG_COMP_RTNR
 	${SOF_AUDIO_PATH}/rtnr/rtnr.c
 )