Audio: Up_down_mix: Split HiFi3 and generic version

This patch moves the generic processing stubs from
up_down_mixer_hifi3.c to new file up_down_mixer_generic.c.
The HiFi versions build choices are added to Kconfig. There
are no code changes to stubs, the generic processing in e.g.
testbench still fails with these.

Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>

Author: singalsu

src/audio/up_down_mixer/CMakeLists.txt

@@ -2,3 +2,4 @@
 
 add_local_sources(sof up_down_mixer.c)
 add_local_sources(sof up_down_mixer_hifi3.c)
+add_local_sources(sof up_down_mixer_generic.c)

src/audio/up_down_mixer/Kconfig

@@ -13,3 +13,19 @@ config COMP_UP_DOWN_MIXER
          2 -> 7.1
          Downmixing for mono output:
          4.0, Quatro, 3.1, 2 -> 1
+
+choice
+	prompt "Up_down_mixer HIFI level"
+	depends on COMP_UP_DOWN_MIXER
+	default UP_DOWN_MIXER_HIFI_MAX
+
+config UP_DOWN_MIXER_HIFI_MAX
+	bool "Max level available in the toolchain"
+
+config UP_DOWN_MIXER_HIFI_3
+	bool "HIFI3 UP_DOWN_MIXER"
+
+config UP_DOWN_MIXER_HIFI_NONE
+	bool "Generic UP_DOWN_MIXER, no HIFI"
+
+endchoice

src/audio/up_down_mixer/up_down_mixer_generic.c

@@ -0,0 +1,195 @@
+// SPDX-License-Identifier: BSD-3-Clause
+//
+// Copyright(c) 2022-2025 Intel Corporation.
+//
+// Author: Bartosz Kokoszko <bartoszx.kokoszko@intel.com>
+//         Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include "up_down_mixer.h"
+
+#if SOF_USE_HIFI(NONE, UP_DOWN_MIXER)
+
+void upmix32bit_1_to_5_1(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			 const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void upmix16bit_1_to_5_1(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			 const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void upmix32bit_2_0_to_5_1(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			   const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void upmix16bit_2_0_to_5_1(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			   const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void upmix32bit_2_0_to_7_1(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			   const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void shiftcopy32bit_mono(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			 const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void shiftcopy32bit_stereo(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			   const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit_2_1(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+		      const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit_3_0(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+		      const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit_3_1(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+		      const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+		  const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit_4_0(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+		      const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit_5_0_mono(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			   const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit_5_1(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+		      const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit_7_1(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+		      const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix16bit_stereo(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			 const uint32_t in_size, uint8_t * const out_data)
+{
+}
+
+void shiftcopy16bit_mono(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			 const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void shiftcopy16bit_stereo(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			   const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix16bit(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+		  const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix16bit_5_1(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+		      const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix16bit_4ch_mono(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			   const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit_stereo(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			 const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit_3_1_mono(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			   const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit_4_0_mono(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			   const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit_quatro_mono(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			      const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit_5_1_mono(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			   const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit_7_1_mono(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			   const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void downmix32bit_7_1_to_5_1(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			     const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void upmix32bit_4_0_to_5_1(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			   const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+void upmix32bit_quatro_to_5_1(struct up_down_mixer_data *cd, const uint8_t * const in_data,
+			      const uint32_t in_size, uint8_t * const out_data)
+{
+	sof_panic(0);
+}
+
+#endif /* #if SOF_USE_HIFI(NONE, UP_DOWN_MIXER) */