Add -L option to print level

1 files changed, 20 insertions, 0 deletions

diff --git a/utils.h b/utils.h
new file mode 100644
index 0000000..7d98ab6
--- /dev/null
+++ b/utils.h
@@ -0,0 +1,20 @@
+#ifndef _UTILS_H_
+#define _UTILS_H_
+
+#include <math.h>
+#include <stdint.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)
+
+/* Calculate the little string containing a bargraph
+ * 'VU-meter' from the peak value measured
+ */
+const char* level(int channel, int* peak);
+
+#endif
+