1 files changed, 17 insertions, 0 deletions
diff --git a/src/utils.h b/src/utils.h
new file mode 100644
index 0000000..c7ddc1e
--- /dev/null
+++ b/src/utils.h
@@ -0,0 +1,17 @@
+#ifndef UTILS_H_
+#define UTILS_H_
+
+#include <math.h>
+
+#define MIN(a,b) (((a)<(b))?(a):(b))
+#define MAX(a,b) (((a)>(b))?(a):(b))
+
+#define NUMOF(l) (sizeof(l) / sizeof(*l))
+
+#define linear_to_dB(x) (log10(x) * 20)
+
+
+const char* level(int channel, int* peak);
+
+#endif
+