#ifndef __ardour_gtk_log_meter_h__
#define __ardour_gtk_log_meter_h__
+#include "ardour/dB.h"
+
#if 1
static inline float
_log_meter (float power, double lower_db, double upper_db, double non_linearity)
return def/115.0f;
}
+static inline float
+log_meter0dB (float db)
+{
+ gfloat def = 0.0f; /* Meter deflection %age */
+
+ if (db < -70.0f) {
+ def = 0.0f;
+ } else if (db < -60.0f) {
+ def = (db + 70.0f) * 0.25f;
+ } else if (db < -50.0f) {
+ def = (db + 60.0f) * 0.5f + 2.5f;
+ } else if (db < -40.0f) {
+ def = (db + 50.0f) * 0.75f + 7.5f;
+ } else if (db < -30.0f) {
+ def = (db + 40.0f) * 1.5f + 15.0f;
+ } else if (db < -20.0f) {
+ def = (db + 30.0f) * 2.0f + 30.0f;
+ } else if (db < 0.0f) {
+ def = (db + 20.0f) * 2.5f + 50.0f;
+ } else {
+ def = 100.0f;
+ }
+ return def/100.0f;
+}
+
static inline float
meter_deflect_ppm (float db)
{