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 functiona changes to stubs, the generic processing in e.g.
testbench still fails with these.

As exception, the missing sof_panic(0); is added to generic
downmix16bit_stereo().

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 +1,196 @@
+// 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)
+{
+	sof_panic(0);
+}
+
+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) */