1 files changed, 68 insertions, 0 deletions
diff --git a/spa/plugins/audiomixer/mix-ops-c.c b/spa/plugins/audiomixer/mix-ops-c.c
new file mode 100644
index 0000000..2f79cd8
--- /dev/null
+++ b/spa/plugins/audiomixer/mix-ops-c.c
@@ -0,0 +1,68 @@
+/* Spa
+ *
+ * Copyright © 2019 Wim Taymans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <string.h>
+#include <stdio.h>
+#include <math.h>
+
+#include <spa/utils/defs.h>
+
+#include "mix-ops.h"
+
+#define MAKE_FUNC(name,type,atype,accum,clamp,zero)				\
+void mix_ ##name## _c(struct mix_ops *ops,					\
+		void * SPA_RESTRICT dst, const void * SPA_RESTRICT src[],	\
+                uint32_t n_src, uint32_t n_samples)				\
+{										\
+	uint32_t i, n;								\
+	type *d = dst;								\
+	const type **s = (const type **)src;					\
+	n_samples *= ops->n_channels;						\
+	if (n_src == 0 && zero)							\
+		memset(dst, 0, n_samples * sizeof(type));			\
+	else if (n_src == 1) {							\
+		if (dst != src[0])						\
+			spa_memcpy(dst, src[0], n_samples * sizeof(type));	\
+	} else {								\
+		for (n = 0; n < n_samples; n++) {				\
+			atype ac = 0;						\
+			for (i = 0; i < n_src; i++)				\
+				ac = accum (ac, s[i][n]);			\
+			d[n] = clamp (ac);					\
+		}								\
+	}									\
+}
+
+MAKE_FUNC(s8, int8_t, int16_t, S8_ACCUM, S8_CLAMP, true);
+MAKE_FUNC(u8, uint8_t, int16_t, U8_ACCUM, U8_CLAMP, false);
+MAKE_FUNC(s16, int16_t, int32_t, S16_ACCUM, S16_CLAMP, true);
+MAKE_FUNC(u16, uint16_t, int16_t, U16_ACCUM, U16_CLAMP, false);
+MAKE_FUNC(s24, int24_t, int32_t, S24_ACCUM, S24_CLAMP, false);
+MAKE_FUNC(u24, uint24_t, int32_t, U24_ACCUM, U24_CLAMP, false);
+MAKE_FUNC(s32, int32_t, int64_t, S32_ACCUM, S32_CLAMP, true);
+MAKE_FUNC(u32, uint32_t, int64_t, U32_ACCUM, U32_CLAMP, false);
+MAKE_FUNC(s24_32, int32_t, int32_t, S24_32_ACCUM, S24_32_CLAMP, true);
+MAKE_FUNC(u24_32, uint32_t, int32_t, U24_32_ACCUM, U24_32_CLAMP, false);
+MAKE_FUNC(f32, float, float, F32_ACCUM, F32_CLAMP, true);
+MAKE_FUNC(f64, double, double, F64_ACCUM, F64_CLAMP, true);