implement new meter types

10 files changed, 714 insertions, 211 deletions

diff --git a/gtk2_ardour/gain_meter.cc b/gtk2_ardour/gain_meter.cc
index caa1fe954a..f142f21641 100644
--- a/gtk2_ardour/gain_meter.cc
+++ b/gtk2_ardour/gain_meter.cc
@@ -1019,19 +1019,22 @@ GainMeter::get_gm_width ()
 gint
 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 {
-	return meter_expose_metrics(ev, _types, &meter_metric_area);
+	assert(_route);
+	return meter_expose_metrics(ev, _route->meter_type(), _types, &meter_metric_area);
 }
 
 gint
 GainMeter::meter_ticks1_expose (GdkEventExpose *ev)
 {
-	return meter_expose_ticks(ev, _types, &meter_ticks1_area);
+	assert(_route);
+	return meter_expose_ticks(ev, _route->meter_type(), _types, &meter_ticks1_area);
 }
 
 gint
 GainMeter::meter_ticks2_expose (GdkEventExpose *ev)
 {
-	return meter_expose_ticks(ev, _types, &meter_ticks2_area);
+	assert(_route);
+	return meter_expose_ticks(ev, _route->meter_type(), _types, &meter_ticks2_area);
 }
 
 boost::shared_ptr<PBD::Controllable>
@@ -1113,4 +1116,5 @@ void
 GainMeter::meter_type_changed (MeterType t)
 {
 	_route->set_meter_type(t);
+	RedrawMetrics();
 }
diff --git a/gtk2_ardour/level_meter.cc b/gtk2_ardour/level_meter.cc
index 6a120fdb80..fd32add587 100644
--- a/gtk2_ardour/level_meter.cc
+++ b/gtk2_ardour/level_meter.cc
@@ -114,6 +114,18 @@ LevelMeter::update_meters ()
 				const float peak = _meter->meter_level (n, meter_type);
 				if (meter_type == MeterPeak) {
 					(*i).meter->set (log_meter (peak));
+				} else if (meter_type == MeterIEC1NOR) {
+					(*i).meter->set (meter_deflect_nordic (peak));
+				} else if (meter_type == MeterIEC1DIN) {
+					(*i).meter->set (meter_deflect_din (peak));
+				} else if (meter_type == MeterIEC2BBC || meter_type == MeterIEC2EBU) {
+					(*i).meter->set (meter_deflect_ppm (peak));
+				} else if (meter_type == MeterVU) {
+					(*i).meter->set (meter_deflect_vu (peak));
+				} else if (meter_type == MeterK14) {
+					(*i).meter->set (meter_deflect_k (peak, 14), meter_deflect_k(_meter->meter_level(n, MeterPeak), 14));
+				} else if (meter_type == MeterK20) {
+					(*i).meter->set (meter_deflect_k (peak, 20), meter_deflect_k(_meter->meter_level(n, MeterPeak), 20));
 				} else {
 					(*i).meter->set (log_meter (peak), log_meter(_meter->meter_level(n, MeterPeak)));
 				}
@@ -161,6 +173,8 @@ void
 LevelMeter::meter_type_changed (MeterType t)
 {
 	meter_type = t;
+	color_changed = true;
+	setup_meters (meter_length, regular_meter_width, thin_meter_width);
 	MeterTypeChanged(t);
 }
 
@@ -227,33 +241,6 @@ LevelMeter::setup_meters (int len, int initial_width, int thin_width)
 			stp[2] = 115.0 * 100.0 / 128.0;
 			stp[3] = 115.0 * 112.0 / 128.0;
 		} else {
-			switch (Config->get_meter_line_up_level()) {
-				case MeteringLineUp24:
-					stp[0] = 42.0;
-					stp[1] = 77.5;
-					stp[2] = 92.5;
-					stp[3] = 100.0;
-					break;
-				case MeteringLineUp20:
-					stp[0] = 50.0;
-					stp[1] = 77.5;
-					stp[2] = 92.5;
-					stp[3] = 100.0;
-					break;
-				default:
-				case MeteringLineUp18:
-					stp[0] = 55.0;
-					stp[1] = 77.5;
-					stp[2] = 92.5;
-					stp[3] = 100.0;
-					break;
-				case MeteringLineUp15:
-					stp[0] = 62.5;
-					stp[1] = 77.5;
-					stp[2] = 92.5;
-					stp[3] = 100.0;
-					break;
-			}
 			c[0] = ARDOUR_UI::config()->canvasvar_MeterColor0.get();
 			c[1] = ARDOUR_UI::config()->canvasvar_MeterColor1.get();
 			c[2] = ARDOUR_UI::config()->canvasvar_MeterColor2.get();
@@ -264,6 +251,75 @@ LevelMeter::setup_meters (int len, int initial_width, int thin_width)
 			c[7] = ARDOUR_UI::config()->canvasvar_MeterColor7.get();
 			c[8] = ARDOUR_UI::config()->canvasvar_MeterColor8.get();
 			c[9] = ARDOUR_UI::config()->canvasvar_MeterColor9.get();
+
+			switch (meter_type) {
+				case MeterK20:
+					stp[0] = 115.0 * meter_deflect_k(-40, 20);  //-20
+					stp[1] = 115.0 * meter_deflect_k(-20, 20);  //  0
+					stp[2] = 115.0 * meter_deflect_k(-18, 20);  // +2
+					stp[3] = 115.0 * meter_deflect_k(-16, 20);  // +4
+					c[0] = c[1] = 0x008800ff;
+					c[2] = c[3] = 0x00ff00ff;
+					c[4] = c[5] = 0xffff00ff;
+					c[6] = c[7] = 0xffff00ff;
+					c[8] = c[9] = 0xff0000ff;
+					break;
+				case MeterK14:
+					stp[0] = 115.0 * meter_deflect_k(-34, 14);  //-20
+					stp[1] = 115.0 * meter_deflect_k(-14, 14);  //  0
+					stp[2] = 115.0 * meter_deflect_k(-12, 14);  // +2
+					stp[3] = 115.0 * meter_deflect_k(-10, 14);  // +4
+					c[0] = c[1] = 0x008800ff;
+					c[2] = c[3] = 0x00ff00ff;
+					c[4] = c[5] = 0xffff00ff;
+					c[6] = c[7] = 0xffff00ff;
+					c[8] = c[9] = 0xff0000ff;
+					break;
+				case MeterIEC2EBU:
+				case MeterIEC2BBC:
+					stp[0] = 115.0 * meter_deflect_ppm(-18);
+					stp[1] = 115.0 * meter_deflect_ppm(-14);
+					stp[2] = 115.0 * meter_deflect_ppm(-10);
+					stp[3] = 115.0 * meter_deflect_ppm( -8);
+					break;
+				case MeterIEC1NOR:
+					stp[0] = 115.0 * meter_deflect_nordic(-18);
+					stp[1] = 115.0 * meter_deflect_nordic(-15);
+					stp[2] = 115.0 * meter_deflect_nordic(-12);
+					stp[3] = 115.0 * meter_deflect_nordic( -9);
+					break;
+				case MeterIEC1DIN:
+					stp[0] = 115.0 * meter_deflect_din(-29);
+					stp[1] = 115.0 * meter_deflect_din(-18);
+					stp[2] = 115.0 * meter_deflect_din(-15);
+					stp[3] = 115.0 * meter_deflect_din( -9);
+					break;
+				case MeterVU:
+					stp[0] = 115.0 * meter_deflect_vu(-26); // -6
+					stp[1] = 115.0 * meter_deflect_vu(-23); // -3
+					stp[2] = 115.0 * meter_deflect_vu(-20); // 0
+					stp[3] = 115.0 * meter_deflect_vu(-18); // +2
+					break;
+				default: // PEAK, RMS
+					stp[1] = 77.5;  // 115 * log_meter(-10)
+					stp[2] = 92.5;  // 115 * log_meter(-3)
+					stp[3] = 100.0; // 115 * log_meter(0)
+				switch (Config->get_meter_line_up_level()) {
+					case MeteringLineUp24:
+						stp[0] = 42.0;
+						break;
+					case MeteringLineUp20:
+						stp[0] = 50.0;
+						break;
+					default:
+					case MeteringLineUp18:
+						stp[0] = 55.0;
+						break;
+					case MeteringLineUp15:
+						stp[0] = 62.5;
+						break;
+				}
+			}
 		}
 		if (meters[n].width != width || meters[n].length != len || color_changed) {
 			delete meters[n].meter;
diff --git a/gtk2_ardour/logmeter.h b/gtk2_ardour/logmeter.h
index d861509080..c7b18ea6b9 100644
--- a/gtk2_ardour/logmeter.h
+++ b/gtk2_ardour/logmeter.h
@@ -34,6 +34,16 @@ alt_log_meter (float power)
 }
 #endif
 
+/* prototypes - avoid compiler warning */
+inline float log_meter (float db);
+inline float meter_deflect_ppm (float);
+inline float meter_deflect_din (float);
+inline float meter_deflect_nordic (float);
+inline float meter_deflect_vu (float);
+inline float meter_deflect_k (float, float);
+
+
+
 inline float
 log_meter (float db)
 {
@@ -65,4 +75,71 @@ log_meter (float db)
          return def/115.0f;
 }
 
+inline float
+meter_deflect_ppm (float db)
+{
+	if (db < -30) {
+		// 2.258 == ((-30 + 32.0)/ 28.0) / 10^(-30 / 20);
+		return (dB_to_coefficient(db) * 2.258769757f);
+	} else {
+		const float rv = (db + 32.0f) / 28.0f;
+		if (rv < 1.0) {
+			return rv;
+		} else {
+			return 1.0;
+		}
+	}
+}
+
+inline float
+meter_deflect_din (float db)
+{
+	float rv = dB_to_coefficient(db);
+	rv = sqrtf (sqrtf (2.3676f * rv)) - 0.1803f;
+	if (rv >= 1.0) {
+		return 1.0;
+	} else {
+		return (rv > 0 ? rv : 0.0);
+	}
+}
+
+inline float
+meter_deflect_nordic (float db)
+{
+	if (db < -60) {
+		return 0.0;
+	} else {
+		const float rv = (db + 60.0f) / 54.0f;
+		if (rv < 1.0) {
+			return rv;
+		} else {
+			return 1.0;
+		}
+	}
+}
+
+inline float
+meter_deflect_vu (float db)
+{
+	const float rv = 6.77165f * dB_to_coefficient(db);
+	if (rv > 1.0) return 1.0;
+	return rv;
+}
+
+inline float
+meter_deflect_k (float db, float krange)
+{
+	db+=krange;
+	if (db < -40.0f) {
+		return (dB_to_coefficient(db) * 500.0f / (krange + 45.0f));
+	} else {
+		const float rv = (db + 45.0f) / (krange + 45.0f);
+		if (rv < 1.0) {
+			return rv;
+		} else {
+			return 1.0;
+		}
+	}
+}
+
 #endif /* __ardour_gtk_log_meter_h__ */
diff --git a/gtk2_ardour/meter_patterns.cc b/gtk2_ardour/meter_patterns.cc
index d658a0b3ef..60bd33ca26 100644
--- a/gtk2_ardour/meter_patterns.cc
+++ b/gtk2_ardour/meter_patterns.cc
@@ -39,6 +39,8 @@ using namespace ArdourMeter;
 
 static const int max_pattern_metric_size = 1026;
 
+/* signals used by meters */
+
 sigc::signal<void> ArdourMeter::ResetAllPeakDisplays;
 sigc::signal<void,ARDOUR::Route*> ArdourMeter::ResetRoutePeakDisplays;
 sigc::signal<void,ARDOUR::RouteGroup*> ArdourMeter::ResetGroupPeakDisplays;
@@ -46,13 +48,28 @@ sigc::signal<void> ArdourMeter::RedrawMetrics;
 
 sigc::signal<void, int, ARDOUR::RouteGroup*, ARDOUR::MeterType> ArdourMeter::SetMeterTypeMulti;
 
+
+/* pattern cache */
+
+struct MeterMatricsMapKey {
+	MeterMatricsMapKey (std::string n, MeterType t)
+		: _n(n)
+		, _t(t)
+	{}
+	inline bool operator<(const MeterMatricsMapKey& rhs) const {
+		return (_n < rhs._n) || (_n == rhs._n && _t < rhs._t);
+	}
+	std::string _n;
+	MeterType _t;
+};
+
 namespace ArdourMeter {
-	typedef std::map<std::string,cairo_pattern_t*> TickPatterns;
-	typedef std::map<std::string,cairo_pattern_t*> MetricPatterns;
+	typedef std::map<MeterMatricsMapKey, cairo_pattern_t*> MetricPatternMap;
 }
 
-static ArdourMeter::TickPatterns ticks_patterns;
-static ArdourMeter::MetricPatterns metric_patterns;
+static ArdourMeter::MetricPatternMap ticks_patterns;
+static ArdourMeter::MetricPatternMap metric_patterns;
+
 
 const std::string
 ArdourMeter::meter_type_string (ARDOUR::MeterType mt)
@@ -61,14 +78,26 @@ ArdourMeter::meter_type_string (ARDOUR::MeterType mt)
 		case MeterPeak:
 			return _("Peak");
 			break;
-		case MeterKrms:
+		case MeterRMS:
 			return _("RMS + Peak");
 			break;
-		case MeterIEC1:
-			return _("DIN");
+		case MeterIEC1DIN:
+			return _("IEC1/DIN");
+			break;
+		case MeterIEC1NOR:
+			return _("IEC1/NOR");
+			break;
+		case MeterIEC2BBC:
+			return _("IEC2/BBC");
+			break;
+		case MeterIEC2EBU:
+			return _("IEC2/EBU");
+			break;
+		case MeterK20:
+			return _("K20");
 			break;
-		case MeterIEC2:
-			return _("EBU/BBC");
+		case MeterK14:
+			return _("K14");
 			break;
 		case MeterVU:
 			return _("VU");
@@ -79,8 +108,99 @@ ArdourMeter::meter_type_string (ARDOUR::MeterType mt)
 	}
 }
 
+
+static inline float mtr_col_and_fract(
+		cairo_t* cr, Gdk::Color const * const c, const uint32_t peakcolor, const MeterType mt, const float val)
+{
+	float fraction = 0;
+
+	switch (mt) {
+		default:
+		case MeterRMS:
+		case MeterPeak:
+			fraction = log_meter (val);
+			if (val >= 0 || val == -9) {
+				cairo_set_source_rgb (cr,
+						UINT_RGBA_R_FLT(peakcolor),
+						UINT_RGBA_G_FLT(peakcolor),
+						UINT_RGBA_B_FLT(peakcolor));
+			} else {
+				cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
+			}
+			break;
+		case MeterIEC2BBC:
+		case MeterIEC2EBU:
+			fraction = meter_deflect_ppm(val);
+			if (val >= -10.0) {
+				cairo_set_source_rgb (cr,
+						UINT_RGBA_R_FLT(peakcolor),
+						UINT_RGBA_G_FLT(peakcolor),
+						UINT_RGBA_B_FLT(peakcolor));
+			} else {
+				cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
+			}
+			break;
+		case MeterIEC1NOR:
+			fraction = meter_deflect_nordic(val);
+			if (val >= -12.0) {
+				cairo_set_source_rgb (cr,
+						UINT_RGBA_R_FLT(peakcolor),
+						UINT_RGBA_G_FLT(peakcolor),
+						UINT_RGBA_B_FLT(peakcolor));
+			} else {
+				cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
+			}
+			break;
+		case MeterIEC1DIN:
+			fraction = meter_deflect_din(val);
+			if (val >= -9.0) {
+				cairo_set_source_rgb (cr,
+						UINT_RGBA_R_FLT(peakcolor),
+						UINT_RGBA_G_FLT(peakcolor),
+						UINT_RGBA_B_FLT(peakcolor));
+			} else {
+				cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
+			}
+			break;
+		case MeterVU:
+			fraction = meter_deflect_vu(val);
+			if (val >= -20.0) {
+				cairo_set_source_rgb (cr,
+						UINT_RGBA_R_FLT(peakcolor),
+						UINT_RGBA_G_FLT(peakcolor),
+						UINT_RGBA_B_FLT(peakcolor));
+			} else {
+				cairo_set_source_rgb (cr, c->get_red_p(), c->get_green_p(), c->get_blue_p());
+			}
+			break;
+		case MeterK20:
+			fraction = meter_deflect_k (val, 20);
+			if (val >= -16.0) {
+				cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
+			} else if (val >= -20.0) {
+				cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
+			} else {
+				cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
+			}
+			break;
+		case MeterK14:
+			if (val >= -10.0) {
+				cairo_set_source_rgb (cr, 1.0, 0.0, 0.0); // red
+			} else if (val >= -14.0) {
+				cairo_set_source_rgb (cr, 0.8, 0.8, 0.0); // yellow
+			} else {
+				cairo_set_source_rgb (cr, 0.0, 1.0, 0.0); // green
+			}
+			fraction = meter_deflect_k (val, 14);
+			break;
+	}
+	return fraction;
+}
+
+
+
 static cairo_pattern_t*
-meter_render_ticks (Gtk::Widget& w, vector<ARDOUR::DataType> types)
+meter_render_ticks (Gtk::Widget& w, MeterType type, vector<ARDOUR::DataType> types)
 {
 	Glib::RefPtr<Gdk::Window> win (w.get_window());
 
@@ -131,45 +251,153 @@ meter_render_ticks (Gtk::Widget& w, vector<ARDOUR::DataType> types)
 
 		switch (*i) {
 		case DataType::AUDIO:
-			points.insert (std::pair<int,float>(-60, 0.5));
-			points.insert (std::pair<int,float>(-50, 0.5));
-			points.insert (std::pair<int,float>(-40, 0.5));
-			points.insert (std::pair<int,float>(-30, 0.5));
-			if (Config->get_meter_line_up_level() == MeteringLineUp24) {
-				points.insert (std::pair<int,float>(-24, 0.5));
-			} else {
-				points.insert (std::pair<int,float>(-25, 0.5));
-			}
-			points.insert (std::pair<int,float>(-20, 1.0));
-
-			points.insert (std::pair<int,float>(-19, 0.5));
-			points.insert (std::pair<int,float>(-18, 1.0));
-			points.insert (std::pair<int,float>(-17, 0.5));
-			points.insert (std::pair<int,float>(-16, 0.5));
-			points.insert (std::pair<int,float>(-15, 1.0));
-
-			points.insert (std::pair<int,float>(-14, 0.5));
-			points.insert (std::pair<int,float>(-13, 0.5));
-			points.insert (std::pair<int,float>(-12, 0.5));
-			points.insert (std::pair<int,float>(-11, 0.5));
-			points.insert (std::pair<int,float>(-10, 1.0));
-
-			points.insert (std::pair<int,float>( -9, 0.5));
-			points.insert (std::pair<int,float>( -8, 0.5));
-			points.insert (std::pair<int,float>( -7, 0.5));
-			points.insert (std::pair<int,float>( -6, 0.5));
-			points.insert (std::pair<int,float>( -5, 1.0));
-			points.insert (std::pair<int,float>( -4, 0.5));
-			points.insert (std::pair<int,float>( -3, 0.5));
-			points.insert (std::pair<int,float>( -2, 0.5));
-			points.insert (std::pair<int,float>( -1, 0.5));
 
-			points.insert (std::pair<int,float>(  0, 1.0));
-			points.insert (std::pair<int,float>(  1, 0.5));
-			points.insert (std::pair<int,float>(  2, 0.5));
-			points.insert (std::pair<int,float>(  3, 0.5));
-			points.insert (std::pair<int,float>(  4, 0.5));
-			points.insert (std::pair<int,float>(  5, 0.5));
+			switch (type) {
+				case MeterK14:
+					points.insert (std::pair<int,float>(-54.0f, 1.0));
+					points.insert (std::pair<int,float>(-44.0f, 1.0));
+					points.insert (std::pair<int,float>(-34.0f, 1.0));
+					points.insert (std::pair<int,float>(-24.0f, 1.0));
+					points.insert (std::pair<int,float>(-20.0f, 1.0));
+					points.insert (std::pair<int,float>(-17.0f, 1.0));
+					points.insert (std::pair<int,float>(-14.0f, 1.0));
+					points.insert (std::pair<int,float>(-11.0f, 1.0));
+					points.insert (std::pair<int,float>( -8.0f, 1.0));
+					points.insert (std::pair<int,float>( -4.0f, 1.0));
+					points.insert (std::pair<int,float>(  0.0f, 1.0));
+					break;
+				case MeterK20:
+					points.insert (std::pair<int,float>(-60.0f, 1.0));
+					points.insert (std::pair<int,float>(-50.0f, 1.0));
+					points.insert (std::pair<int,float>(-40.0f, 1.0));
+					points.insert (std::pair<int,float>(-30.0f, 1.0));
+					points.insert (std::pair<int,float>(-26.0f, 1.0));
+					points.insert (std::pair<int,float>(-23.0f, 1.0));
+					points.insert (std::pair<int,float>(-20.0f, 1.0));
+					points.insert (std::pair<int,float>(-17.0f, 1.0));
+					points.insert (std::pair<int,float>(-14.0f, 1.0));
+					points.insert (std::pair<int,float>(-10.0f, 1.0));
+					points.insert (std::pair<int,float>( -5.0f, 1.0));
+					points.insert (std::pair<int,float>(  0.0f, 1.0));
+					break;
+				case MeterIEC2EBU:
+					points.insert (std::pair<float,float>(-30.0f, 1.0));
+					points.insert (std::pair<float,float>(-28.0f, 0.5));
+					points.insert (std::pair<float,float>(-26.0f, 1.0));
+					points.insert (std::pair<float,float>(-24.0f, 0.5));
+					points.insert (std::pair<float,float>(-22.0f, 1.0));
+					points.insert (std::pair<float,float>(-20.0f, 0.5));
+					points.insert (std::pair<float,float>(-18.0f, 1.0));
+					points.insert (std::pair<float,float>(-16.0f, 0.5));
+					points.insert (std::pair<float,float>(-14.0f, 1.0));
+					points.insert (std::pair<float,float>(-12.0f, 0.5));
+					points.insert (std::pair<float,float>(-10.0f, 1.0));
+					points.insert (std::pair<float,float>( -9.0f, 0.5));
+					points.insert (std::pair<float,float>( -8.0f, 0.5));
+					points.insert (std::pair<float,float>( -6.0f, 1.0));
+					break;
+				case MeterIEC2BBC:
+					points.insert (std::pair<float,float>(-30.0f, 1.0));
+					points.insert (std::pair<float,float>(-26.0f, 1.0));
+					points.insert (std::pair<float,float>(-22.0f, 1.0));
+					points.insert (std::pair<float,float>(-18.0f, 1.0));
+					points.insert (std::pair<float,float>(-14.0f, 1.0));
+					points.insert (std::pair<float,float>(-10.0f, 1.0));
+					points.insert (std::pair<float,float>( -6.0f, 1.0));
+					break;
+				case MeterIEC1NOR:
+					points.insert (std::pair<float,float>(-60.0f, 1.0)); // -42
+					points.insert (std::pair<float,float>(-57.0f, 0.5));
+					points.insert (std::pair<float,float>(-54.0f, 1.0));
+					points.insert (std::pair<float,float>(-51.0f, 0.5));
+					points.insert (std::pair<float,float>(-48.0f, 1.0));
+					points.insert (std::pair<float,float>(-45.0f, 0.5));
+					points.insert (std::pair<float,float>(-42.0f, 1.0));
+					points.insert (std::pair<float,float>(-39.0f, 0.5));
+					points.insert (std::pair<float,float>(-36.0f, 1.0));
+
+					points.insert (std::pair<float,float>(-33.0f, 1.0));
+					points.insert (std::pair<float,float>(-30.0f, 1.0));
+					points.insert (std::pair<float,float>(-27.0f, 1.0));
+					points.insert (std::pair<float,float>(-24.0f, 1.0));
+					points.insert (std::pair<float,float>(-21.0f, 1.0));
+
+					points.insert (std::pair<float,float>(-18.0f, 1.0));
+					points.insert (std::pair<float,float>(-15.0f, 1.0));
+					points.insert (std::pair<float,float>(-12.0f, 1.0));
+					points.insert (std::pair<float,float>( -9.0f, 1.0));
+					points.insert (std::pair<float,float>( -6.0f, 1.0));
+					break;
+				case MeterIEC1DIN:
+					points.insert (std::pair<float,float>( -3.0f, 0.5)); // "200%"
+					points.insert (std::pair<float,float>( -4.0f, 1.0)); // "100%"
+					points.insert (std::pair<float,float>( -9.0f, 1.0));
+					points.insert (std::pair<float,float>(-14.0f, 1.0));
+					points.insert (std::pair<float,float>(-15.0f, 0.5)); // "50%"
+					points.insert (std::pair<float,float>(-18.0f, 0.5)); // "-9"
+					points.insert (std::pair<float,float>(-19.0f, 1.0)); // "30%"
+					points.insert (std::pair<float,float>(-29.0f, 1.0)); // "10%"
+					points.insert (std::pair<float,float>(-35.0f, 0.5)); // "5%" " -20"
+					points.insert (std::pair<float,float>(-39.0f, 1.0)); // "3%"
+					points.insert (std::pair<float,float>(-49.0f, 0.5)); // "1%"
+					points.insert (std::pair<float,float>(-59.0f, 1.0));
+					break;
+				case MeterVU:
+					points.insert (std::pair<float,float>(-17.0f, 1.0));
+					points.insert (std::pair<float,float>(-18.0f, 1.0));
+					points.insert (std::pair<float,float>(-19.0f, 1.0));
+					points.insert (std::pair<float,float>(-20.0f, 1.0));
+					points.insert (std::pair<float,float>(-21.0f, 1.0));
+					points.insert (std::pair<float,float>(-22.0f, 1.0));
+					points.insert (std::pair<float,float>(-23.0f, 1.0));
+					points.insert (std::pair<float,float>(-25.0f, 1.0));
+					points.insert (std::pair<float,float>(-27.0f, 1.0));
+					points.insert (std::pair<float,float>(-30.0f, 1.0));
+					points.insert (std::pair<float,float>(-40.0f, 1.0));
+					break;
+
+				default:
+					points.insert (std::pair<int,float>(-60, 0.5));
+					points.insert (std::pair<int,float>(-50, 1.0));
+					points.insert (std::pair<int,float>(-40, 1.0));
+					points.insert (std::pair<int,float>(-30, 1.0));
+					if (Config->get_meter_line_up_level() == MeteringLineUp24) {
+						points.insert (std::pair<int,float>(-24, 1.0));
+					} else {
+						points.insert (std::pair<int,float>(-25, 1.0));
+					}
+					points.insert (std::pair<int,float>(-20, 1.0));
+
+					points.insert (std::pair<int,float>(-19, 0.5));
+					points.insert (std::pair<int,float>(-18, 1.0));
+					points.insert (std::pair<int,float>(-17, 0.5));
+					points.insert (std::pair<int,float>(-16, 0.5));
+					points.insert (std::pair<int,float>(-15, 1.0));
+
+					points.insert (std::pair<int,float>(-14, 0.5));
+					points.insert (std::pair<int,float>(-13, 0.5));
+					points.insert (std::pair<int,float>(-12, 0.5));
+					points.insert (std::pair<int,float>(-11, 0.5));
+					points.insert (std::pair<int,float>(-10, 1.0));
+
+					points.insert (std::pair<int,float>( -9, 1.0));
+					points.insert (std::pair<int,float>( -8, 0.5));
+					points.insert (std::pair<int,float>( -7, 0.5));
+					points.insert (std::pair<int,float>( -6, 0.5));
+					points.insert (std::pair<int,float>( -5, 1.0));
+					points.insert (std::pair<int,float>( -4, 0.5));
+					points.insert (std::pair<int,float>( -3, 1.0));
+					points.insert (std::pair<int,float>( -2, 0.5));
+					points.insert (std::pair<int,float>( -1, 0.5));
+
+					points.insert (std::pair<int,float>(  0, 1.0));
+					points.insert (std::pair<int,float>(  1, 0.5));
+					points.insert (std::pair<int,float>(  2, 0.5));
+					points.insert (std::pair<int,float>(  3, 1.0));
+					points.insert (std::pair<int,float>(  4, 0.5));
+					points.insert (std::pair<int,float>(  5, 0.5));
+					break;
+			}
 			break;
 
 		case DataType::MIDI:
@@ -194,16 +422,10 @@ meter_render_ticks (Gtk::Widget& w, vector<ARDOUR::DataType> types)
 
 			switch (*i) {
 			case DataType::AUDIO:
-				if (j->first >= 0 || j->first == -9) {
-					cairo_set_source_rgb (cr,
-							UINT_RGBA_R_FLT(peakcolor),
-							UINT_RGBA_G_FLT(peakcolor),
-							UINT_RGBA_B_FLT(peakcolor));
-				} else {
-					cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
-				}
-				fraction = log_meter (j->first);
+				fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
+
 				pos = height - (gint) floor (height * fraction);
+				pos = max (pos, 1);
 				cairo_move_to(cr, 0, pos + .5);
 				cairo_line_to(cr, 3, pos + .5);
 				cairo_stroke (cr);
@@ -227,9 +449,8 @@ meter_render_ticks (Gtk::Widget& w, vector<ARDOUR::DataType> types)
 	return pattern;
 }
 
-
 static cairo_pattern_t*
-meter_render_metrics (Gtk::Widget& w, vector<DataType> types)
+meter_render_metrics (Gtk::Widget& w, MeterType type, vector<DataType> types)
 {
 	Glib::RefPtr<Gdk::Window> win (w.get_window());
 
@@ -286,16 +507,16 @@ meter_render_metrics (Gtk::Widget& w, vector<DataType> types)
 	}
 	cairo_fill (cr);
 
+	cairo_set_line_width (cr, 1.0);
+
 	height = min(max_pattern_metric_size, height);
 	uint32_t peakcolor = ARDOUR_UI::config()->color_by_name ("meterbridge peaklabel");
 
 	for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 
 		Gdk::Color c;
-
 		if (types.size() > 1) {
 			/* we're overlaying more than 1 set of marks, so use different colours */
-			Gdk::Color c;
 			switch (*i) {
 			case DataType::AUDIO:
 				c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
@@ -311,100 +532,191 @@ meter_render_metrics (Gtk::Widget& w, vector<DataType> types)
 			cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 		}
 
-		std::map<int,float> points;
+
+		std::map<float,string> points;
 
 		switch (*i) {
 		case DataType::AUDIO:
 			layout->set_attributes (audio_font_attributes);
-			points.insert (std::pair<int,float>(-50, 0.5));
-			points.insert (std::pair<int,float>(-40, 0.5));
-			points.insert (std::pair<int,float>(-30, 0.5));
-			points.insert (std::pair<int,float>(-20, 1.0));
-			if (types.size() == 1) {
-				if (Config->get_meter_line_up_level() == MeteringLineUp24) {
-					points.insert (std::pair<int,float>(-24, 0.5));
-				} else {
-					points.insert (std::pair<int,float>(-25, 0.5));
-				}
-				points.insert (std::pair<int,float>(-15, 1.0));
+			switch (type) {
+				case MeterK14:
+					points.insert (std::pair<int,string>(-54.0f, "-40"));
+					points.insert (std::pair<int,string>(-44.0f, "-30"));
+					points.insert (std::pair<int,string>(-34.0f, "-20"));
+					points.insert (std::pair<int,string>(-24.0f, "-10"));
+					points.insert (std::pair<int,string>(-20.0f,  "-6"));
+					points.insert (std::pair<int,string>(-17.0f,  "-3"));
+					points.insert (std::pair<int,string>(-14.0f,   "0"));
+					points.insert (std::pair<int,string>(-11.0f,  "+3"));
+					points.insert (std::pair<int,string>( -8.0f,  "+6"));
+					points.insert (std::pair<int,string>( -4.0f, "+10"));
+					points.insert (std::pair<int,string>(  0.0f, "+14"));
+					break;
+				case MeterK20:
+					points.insert (std::pair<int,string>(-60.0f, "-40"));
+					points.insert (std::pair<int,string>(-50.0f, "-30"));
+					points.insert (std::pair<int,string>(-40.0f, "-20"));
+					points.insert (std::pair<int,string>(-30.0f, "-10"));
+					points.insert (std::pair<int,string>(-26.0f,  "-6"));
+					points.insert (std::pair<int,string>(-23.0f,  "-3"));
+					points.insert (std::pair<int,string>(-20.0f,   "0"));
+					points.insert (std::pair<int,string>(-17.0f,  "+3"));
+					points.insert (std::pair<int,string>(-14.0f,  "+6"));
+					points.insert (std::pair<int,string>(-10.0f, "+10"));
+					points.insert (std::pair<int,string>( -5.0f, "+15"));
+					points.insert (std::pair<int,string>(  0.0f, "+20"));
+					break;
+				default:
+				case MeterPeak:
+				case MeterRMS:
+					points.insert (std::pair<int,string>(-50.0f, "-50"));
+					points.insert (std::pair<int,string>(-40.0f, "-40"));
+					points.insert (std::pair<int,string>(-30.0f, "-30"));
+					points.insert (std::pair<int,string>(-20.0f, "-20"));
+					if (types.size() == 1) {
+						if (Config->get_meter_line_up_level() == MeteringLineUp24) {
+							points.insert (std::pair<int,string>(-24.0f, "-24"));
+						} else {
+							points.insert (std::pair<int,string>(-25.0f, "-25"));
+						}
+						points.insert (std::pair<int,string>(-15.0f, "-15"));
+					}
+					points.insert (std::pair<int,string>(-18.0f, "-18"));
+					points.insert (std::pair<int,string>(-10.0f, "-10"));
+					points.insert (std::pair<int,string>( -5.0f, "-5"));
+					points.insert (std::pair<int,string>( -3.0f, "-3"));
+					points.insert (std::pair<int,string>(  0.0f, "+0"));
+					points.insert (std::pair<int,string>(  3.0f, "+3"));
+					break;
+
+				case MeterIEC2EBU:
+					points.insert (std::pair<float,string>(-30.0f, "-12"));
+					points.insert (std::pair<float,string>(-26.0f, "-8"));
+					points.insert (std::pair<float,string>(-22.0f, "-4"));
+					points.insert (std::pair<float,string>(-18.0f, "TST"));
+					points.insert (std::pair<float,string>(-14.0f, "+4"));
+					points.insert (std::pair<float,string>(-10.0f, "+8"));
+					points.insert (std::pair<float,string>( -6.0f, "+12"));
+					break;
+
+				case MeterIEC2BBC:
+					points.insert (std::pair<float,string>(-30.0f, "1"));
+					points.insert (std::pair<float,string>(-26.0f, "2"));
+					points.insert (std::pair<float,string>(-22.0f, "3"));
+					points.insert (std::pair<float,string>(-18.0f, "4"));
+					points.insert (std::pair<float,string>(-14.0f, "5"));
+					points.insert (std::pair<float,string>(-10.0f, "6"));
+					points.insert (std::pair<float,string>( -6.0f, "7"));
+					break;
+
+				case MeterIEC1NOR:
+					//points.insert (std::pair<float,string>(-60.0f, "-42"));
+					points.insert (std::pair<float,string>(-54.0f, "-36"));
+					points.insert (std::pair<float,string>(-48.0f, "-30"));
+					points.insert (std::pair<float,string>(-42.0f, "-24"));
+					points.insert (std::pair<float,string>(-36.0f, "-18"));
+
+					points.insert (std::pair<float,string>(-33.0f, "-15"));
+					points.insert (std::pair<float,string>(-30.0f, "-12"));
+					points.insert (std::pair<float,string>(-27.0f, "-9"));
+					points.insert (std::pair<float,string>(-24.0f, "-6"));
+					points.insert (std::pair<float,string>(-21.0f, "-3"));
+
+					points.insert (std::pair<float,string>(-18.0f, "TST"));
+					points.insert (std::pair<float,string>(-15.0f, "+3"));
+					points.insert (std::pair<float,string>(-12.0f, "+6"));
+					points.insert (std::pair<float,string>( -9.0f, "+9"));
+					points.insert (std::pair<float,string>( -6.0f, "+12"));
+					break;
+
+				case MeterIEC1DIN:
+					//points.insert (std::pair<float,string>( -3.0f, "200%"));
+					points.insert (std::pair<float,string>( -4.0f, "+5")); // "100%"
+					points.insert (std::pair<float,string>( -9.0f, "0"));
+					points.insert (std::pair<float,string>(-14.0f, "-5"));
+					//points.insert (std::pair<float,string>(-15.0f, "50%"));
+					//points.insert (std::pair<float,string>(-18.0f, "-9"));
+					points.insert (std::pair<float,string>(-19.0f, "-10")); // "30%"
+					points.insert (std::pair<float,string>(-29.0f, "-20")); // "10%"
+					//points.insert (std::pair<float,string>(-35.0f, "-20")); // "5%"
+					points.insert (std::pair<float,string>(-39.0f, "-30")); // "3%"
+					//points.insert (std::pair<float,string>(-49.0f, "1%"));
+					points.insert (std::pair<float,string>(-59.0f, "-50"));
+					break;
+
+				case MeterVU:
+					points.insert (std::pair<float,string>(-17.0f, "+3"));
+					points.insert (std::pair<float,string>(-18.0f, "+2"));
+					points.insert (std::pair<float,string>(-19.0f, "+1"));
+					points.insert (std::pair<float,string>(-20.0f, "0"));
+					points.insert (std::pair<float,string>(-21.0f, "-1"));
+					points.insert (std::pair<float,string>(-22.0f, "-2"));
+					points.insert (std::pair<float,string>(-23.0f, "-3"));
+					points.insert (std::pair<float,string>(-25.0f, "-5"));
+					points.insert (std::pair<float,string>(-27.0f, "-7"));
+					points.insert (std::pair<float,string>(-30.0f, "-10"));
+					points.insert (std::pair<float,string>(-40.0f, "-20"));
+					break;
 			}
-			points.insert (std::pair<int,float>(-18, 1.0));
-			points.insert (std::pair<int,float>(-10, 1.0));
-			points.insert (std::pair<int,float>( -5, 1.0));
-			points.insert (std::pair<int,float>( -3, 0.5));
-			points.insert (std::pair<int,float>(  0, 1.0));
-			points.insert (std::pair<int,float>(  3, 0.5));
 			break;
-
 		case DataType::MIDI:
 			layout->set_attributes (midi_font_attributes);
-			points.insert (std::pair<int,float>(  0, 1.0));
+			points.insert (std::pair<int,string>(  0, "0"));
 			if (types.size() == 1) {
-				points.insert (std::pair<int,float>( 16, 0.5));
-				points.insert (std::pair<int,float>( 32, 0.5));
-				points.insert (std::pair<int,float>( 48, 0.5));
-				points.insert (std::pair<int,float>( 64, 1.0));
-				points.insert (std::pair<int,float>( 80, 0.5));
-				points.insert (std::pair<int,float>( 96, 0.5));
-				points.insert (std::pair<int,float>(100, 0.5));
-				points.insert (std::pair<int,float>(112, 0.5));
+				points.insert (std::pair<int,string>( 16,  "16"));
+				points.insert (std::pair<int,string>( 32,  "32"));
+				points.insert (std::pair<int,string>( 48,  "48"));
+				points.insert (std::pair<int,string>( 64,  "64"));
+				points.insert (std::pair<int,string>( 80,  "80"));
+				points.insert (std::pair<int,string>( 96,  "96"));
+				points.insert (std::pair<int,string>(100, "100"));
+				points.insert (std::pair<int,string>(112, "112"));
 			} else {
 				/* labels that don't overlay with dB */
-				points.insert (std::pair<int,float>( 24, 0.5));
-				points.insert (std::pair<int,float>( 48, 0.5));
-				points.insert (std::pair<int,float>( 72, 0.5));
+				points.insert (std::pair<int,string>( 24, "24"));
+				points.insert (std::pair<int,string>( 48, "48"));
+				points.insert (std::pair<int,string>( 72, "74"));
 			}
-			points.insert (std::pair<int,float>(127, 1.0));
+			points.insert (std::pair<int,string>(127, "127"));
 			break;
 		}
 
-		char buf[32];
 		gint pos;
 
-		for (std::map<int,float>::const_iterator j = points.begin(); j != points.end(); ++j) {
-
+		for (std::map<float,string>::const_iterator j = points.begin(); j != points.end(); ++j) {
 			float fraction = 0;
 			switch (*i) {
-			case DataType::AUDIO:
-				cairo_set_line_width (cr, (j->second));
-				if (j->first >= 0) {
-					cairo_set_source_rgb (cr,
-							UINT_RGBA_R_FLT(peakcolor),
-							UINT_RGBA_G_FLT(peakcolor),
-							UINT_RGBA_B_FLT(peakcolor));
-				}
-				fraction = log_meter (j->first);
-				snprintf (buf, sizeof (buf), "%+2d", j->first);
-				pos = height - (gint) floor (height * fraction);
-				if (tickleft) {
-					cairo_move_to(cr, width-1.5, pos + .5);
-					cairo_line_to(cr, width, pos + .5);
-					cairo_stroke (cr);
-				} else if (tickright) {
-					cairo_move_to(cr, 0, pos + .5);
-					cairo_line_to(cr, 1.5, pos + .5);
-					cairo_stroke (cr);
-				}
-				break;
-			case DataType::MIDI:
-				cairo_set_line_width (cr, 1.0);
-				fraction = (j->first) / 127.0;
-				snprintf (buf, sizeof (buf), "%3d", j->first);
-				pos = 1 + height - (gint) rintf (height * fraction);
-				pos = min (pos, height);
-				if (tickleft) {
-					cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
-					cairo_fill(cr);
-				} else if (tickright) {
-					cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
-					cairo_fill(cr);
-				}
-				break;
+				case DataType::AUDIO:
+					fraction = mtr_col_and_fract(cr, &c, peakcolor, type, j->first);
+
+					pos = height - (gint) floor (height * fraction);
+					pos = max (pos, 1);
+					if (tickleft) {
+						cairo_move_to(cr, width-1.5, pos + .5);
+						cairo_line_to(cr, width, pos + .5);
+						cairo_stroke (cr);
+					} else if (tickright) {
+						cairo_move_to(cr, 0, pos + .5);
+						cairo_line_to(cr, 1.5, pos + .5);
+						cairo_stroke (cr);
+					}
+					break;
+
+				case DataType::MIDI:
+					fraction = (j->first) / 127.0;
+					pos = 1 + height - (gint) rintf (height * fraction);
+					pos = min (pos, height);
+					if (tickleft) {
+						cairo_arc(cr, width - 2.0, pos + .5, 1.0, 0, 2 * M_PI);
+						cairo_fill(cr);
+					} else if (tickright) {
+						cairo_arc(cr, 3, pos + .5, 1.0, 0, 2 * M_PI);
+						cairo_fill(cr);
+					}
+					break;
 			}
 
-			layout->set_text(buf);
-
-			/* we want logical extents, not ink extents here */
+			layout->set_text(j->second.c_str());
 
 			int tw, th;
 			layout->get_pixel_size(tw, th);
@@ -418,12 +730,40 @@ meter_render_metrics (Gtk::Widget& w, vector<DataType> types)
 		}
 	}
 
+	// add legend
 	if (types.size() == 1) {
 		int tw, th;
 		layout->set_attributes (unit_font_attributes);
 		switch (types.at(0)) {
 			case DataType::AUDIO:
-				layout->set_text("dBFS");
+				switch (type) {
+					case MeterK20:
+						layout->set_text("K20");
+						break;
+					case MeterK14:
+						layout->set_text("K14");
+						break;
+					default:
+					case MeterPeak:
+					case MeterRMS:
+						layout->set_text("dBFS");
+						break;
+					case MeterIEC2EBU:
+						layout->set_text("EBU");
+						break;
+					case MeterIEC2BBC:
+						layout->set_text("BBC");
+						break;
+					case MeterIEC1DIN:
+						layout->set_text("DIN");
+						break;
+					case MeterIEC1NOR:
+						layout->set_text("NOR");
+						break;
+					case MeterVU:
+						layout->set_text("VU");
+						break;
+				}
 				layout->get_pixel_size(tw, th);
 				break;
 			case DataType::MIDI:
@@ -445,9 +785,8 @@ meter_render_metrics (Gtk::Widget& w, vector<DataType> types)
 	return pattern;
 }
 
-
 gint
-ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
+ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta)
 {
 	Glib::RefPtr<Gdk::Window> win (mta->get_window());
 	cairo_t* cr;
@@ -460,11 +799,12 @@ ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, std::vector<ARDOUR::DataTyp
 	cairo_clip (cr);
 
 	cairo_pattern_t* pattern;
-	TickPatterns::iterator i = ticks_patterns.find (mta->get_name());
+	const MeterMatricsMapKey key (mta->get_name(), type);
+	MetricPatternMap::iterator i = ticks_patterns.find (key);
 
 	if (i == ticks_patterns.end()) {
-		pattern = meter_render_ticks (*mta, types);
-		ticks_patterns[mta->get_name()] = pattern;
+		pattern = meter_render_ticks (*mta, type, types);
+		ticks_patterns[key] = pattern;
 	} else {
 		pattern = i->second;
 	}
@@ -484,7 +824,7 @@ ArdourMeter::meter_expose_ticks (GdkEventExpose *ev, std::vector<ARDOUR::DataTyp
 }
 
 gint
-ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
+ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma)
 {
 	Glib::RefPtr<Gdk::Window> win (mma->get_window());
 	cairo_t* cr;
@@ -497,11 +837,12 @@ ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, std::vector<ARDOUR::DataT
 	cairo_clip (cr);
 
 	cairo_pattern_t* pattern;
-	MetricPatterns::iterator i = metric_patterns.find (mma->get_name());
+	const MeterMatricsMapKey key (mma->get_name(), type);
+	MetricPatternMap::iterator i = metric_patterns.find (key);
 
 	if (i == metric_patterns.end()) {
-		pattern = meter_render_metrics (*mma, types);
-		metric_patterns[mma->get_name()] = pattern;
+		pattern = meter_render_metrics (*mma, type, types);
+		metric_patterns[key] = pattern;
 	} else {
 		pattern = i->second;
 	}
@@ -522,12 +863,13 @@ ArdourMeter::meter_expose_metrics (GdkEventExpose *ev, std::vector<ARDOUR::DataT
 
 void
 ArdourMeter::meter_clear_pattern_cache(int which) {
-	MetricPatterns::iterator i = metric_patterns.begin();
-	TickPatterns::iterator j = ticks_patterns.begin();
+	MetricPatternMap::iterator i = metric_patterns.begin();
+	MetricPatternMap::iterator j = ticks_patterns.begin();
 
 	while (i != metric_patterns.end()) {
 		int m = 4;
-		std::string n = i->first;
+		MeterMatricsMapKey const * const key = &(i->first);
+		std::string n = key->_n;
 		if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 		if (n.substr(n.length() - 5) == "Right") { m = 2; }
 		if (which & m) {
@@ -540,7 +882,8 @@ ArdourMeter::meter_clear_pattern_cache(int which) {
 
 	while (j != ticks_patterns.end()) {
 		int m = 4;
-		std::string n = j->first;
+		MeterMatricsMapKey const * const key = &(j->first);
+		std::string n = key->_n;
 		if (n.substr(n.length() - 4) == "Left")  { m = 1; }
 		if (n.substr(n.length() - 5) == "Right") { m = 2; }
 		if (which & m) {
diff --git a/gtk2_ardour/meter_patterns.h b/gtk2_ardour/meter_patterns.h
index 90ef4ec980..f505ba37c7 100644
--- a/gtk2_ardour/meter_patterns.h
+++ b/gtk2_ardour/meter_patterns.h
@@ -37,8 +37,8 @@ extern sigc::signal<void> RedrawMetrics;
 
 extern sigc::signal<void, int, ARDOUR::RouteGroup*, ARDOUR::MeterType> SetMeterTypeMulti;
 
-gint meter_expose_ticks (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta);
-gint meter_expose_metrics (GdkEventExpose *ev, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma);
+gint meter_expose_ticks (GdkEventExpose *ev, ARDOUR::MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mta);
+gint meter_expose_metrics (GdkEventExpose *ev, ARDOUR::MeterType type, std::vector<ARDOUR::DataType> types, Gtk::DrawingArea *mma);
 
 void meter_clear_pattern_cache(int which=7);
 
diff --git a/gtk2_ardour/meter_strip.cc b/gtk2_ardour/meter_strip.cc
index 3a8410867a..263241bbd1 100644
--- a/gtk2_ardour/meter_strip.cc
+++ b/gtk2_ardour/meter_strip.cc
@@ -112,8 +112,8 @@ MeterStrip::MeterStrip (Session* sess, boost::shared_ptr<ARDOUR::Route> rt)
 	level_meter = new LevelMeter(sess);
 	level_meter->set_meter (_route->shared_peak_meter().get());
 	level_meter->clear_meters();
-	level_meter->setup_meters (220, meter_width, 6);
 	level_meter->set_type (_route->meter_type());
+	level_meter->setup_meters (220, meter_width, 6);
 	level_meter->ButtonPress.connect_same_thread (level_meter_connection, boost::bind (&MeterStrip::level_meter_button_press, this, _1));
 	level_meter->MeterTypeChanged.connect_same_thread (level_meter_connection, boost::bind (&MeterStrip::meter_type_changed, this, _1));
 
@@ -394,7 +394,8 @@ MeterStrip::on_size_allocate (Gtk::Allocation& a)
 gint
 MeterStrip::meter_metrics_expose (GdkEventExpose *ev)
 {
-	return meter_expose_metrics(ev, _types, &meter_metric_area);
+	// TODO meter-type - set with set_metric_mode()
+	return meter_expose_metrics(ev, /*XXX*/ MeterPeak, _types, &meter_metric_area);
 }
 
 void
@@ -432,13 +433,15 @@ MeterStrip::set_pos (int pos)
 gint
 MeterStrip::meter_ticks1_expose (GdkEventExpose *ev)
 {
-	return meter_expose_ticks(ev, _types, &meter_ticks1_area);
+	assert(_route);
+	return meter_expose_ticks(ev, _route->meter_type(), _types, &meter_ticks1_area);
 }
 
 gint
 MeterStrip::meter_ticks2_expose (GdkEventExpose *ev)
 {
-	return meter_expose_ticks(ev, _types, &meter_ticks2_area);
+	assert(_route);
+	return meter_expose_ticks(ev, _route->meter_type(), _types, &meter_ticks2_area);
 }
 
 void
@@ -572,10 +575,14 @@ MeterStrip::popup_level_meter_menu (GdkEventButton* ev)
 
 	_suspend_menu_callbacks = true;
 	add_level_meter_item (items, group, ArdourMeter::meter_type_string(MeterPeak), MeterPeak);
-	add_level_meter_item (items, group, ArdourMeter::meter_type_string(MeterKrms), MeterKrms);
-	add_level_meter_item (items, group, ArdourMeter::meter_type_string(MeterIEC1), MeterIEC1);
-	add_level_meter_item (items, group, ArdourMeter::meter_type_string(MeterIEC2), MeterIEC2);
-	add_level_meter_item (items, group, ArdourMeter::meter_type_string(MeterVU),   MeterVU);
+	add_level_meter_item (items, group, ArdourMeter::meter_type_string(MeterRMS),  MeterRMS);
+	add_level_meter_item (items, group, ArdourMeter::meter_type_string(MeterIEC1DIN), MeterIEC1DIN);
+	add_level_meter_item (items, group, ArdourMeter::meter_type_string(MeterIEC1NOR), MeterIEC1NOR);
+	add_level_meter_item (items, group, ArdourMeter::meter_type_string(MeterIEC2BBC), MeterIEC2BBC);
+	add_level_meter_item (items, group, ArdourMeter::meter_type_string(MeterIEC2EBU), MeterIEC2EBU);
+	add_level_meter_item (items, group, ArdourMeter::meter_type_string(MeterK20), MeterK20);
+	add_level_meter_item (items, group, ArdourMeter::meter_type_string(MeterK14), MeterK14);
+	add_level_meter_item (items, group, ArdourMeter::meter_type_string(MeterVU),  MeterVU);
 
 	MeterType cmt = _route->meter_type();
 	const std::string cmn = ArdourMeter::meter_type_string(cmt);
diff --git a/gtk2_ardour/mixer_strip.cc b/gtk2_ardour/mixer_strip.cc
index dec072b067..e4afad2fea 100644
--- a/gtk2_ardour/mixer_strip.cc
+++ b/gtk2_ardour/mixer_strip.cc
@@ -2134,10 +2134,14 @@ MixerStrip::popup_level_meter_menu (GdkEventButton* ev)
 	items.push_back (SeparatorElem());
 
 	add_level_meter_item_type (items, tgroup, ArdourMeter::meter_type_string(MeterPeak), MeterPeak);
-	add_level_meter_item_type (items, tgroup, ArdourMeter::meter_type_string(MeterKrms), MeterKrms);
-	add_level_meter_item_type (items, tgroup, ArdourMeter::meter_type_string(MeterIEC1), MeterIEC1);
-	add_level_meter_item_type (items, tgroup, ArdourMeter::meter_type_string(MeterIEC2), MeterIEC2);
-	add_level_meter_item_type (items, tgroup, ArdourMeter::meter_type_string(MeterVU),   MeterVU);
+	add_level_meter_item_type (items, tgroup, ArdourMeter::meter_type_string(MeterRMS),  MeterRMS);
+	add_level_meter_item_type (items, tgroup, ArdourMeter::meter_type_string(MeterIEC1DIN), MeterIEC1DIN);
+	add_level_meter_item_type (items, tgroup, ArdourMeter::meter_type_string(MeterIEC1NOR), MeterIEC1NOR);
+	add_level_meter_item_type (items, tgroup, ArdourMeter::meter_type_string(MeterIEC2BBC), MeterIEC2BBC);
+	add_level_meter_item_type (items, tgroup, ArdourMeter::meter_type_string(MeterIEC2EBU), MeterIEC2EBU);
+	add_level_meter_item_type (items, tgroup, ArdourMeter::meter_type_string(MeterK20), MeterK20);
+	add_level_meter_item_type (items, tgroup, ArdourMeter::meter_type_string(MeterK14), MeterK14);
+	add_level_meter_item_type (items, tgroup, ArdourMeter::meter_type_string(MeterVU),  MeterVU);
 
 	int _strip_type;
 	if (_route->is_master()) {
diff --git a/libs/ardour/ardour/types.h b/libs/ardour/ardour/types.h
index df7209b581..7b396796ad 100644
--- a/libs/ardour/ardour/types.h
+++ b/libs/ardour/ardour/types.h
@@ -178,13 +178,17 @@ namespace ARDOUR {
 	};
 
 	enum MeterType {
-		MeterMaxSignal = 0x01,
-		MeterMaxPeak   = 0x02,
-		MeterPeak      = 0x04,
-		MeterKrms      = 0x08,
-		MeterIEC1      = 0x10,
-		MeterIEC2      = 0x20,
-		MeterVU        = 0x40
+		MeterMaxSignal = 0x001,
+		MeterMaxPeak   = 0x002,
+		MeterPeak      = 0x004,
+		MeterRMS       = 0x008,
+		MeterK20       = 0x010,
+		MeterK14       = 0x020,
+		MeterIEC1DIN   = 0x040,
+		MeterIEC1NOR   = 0x080,
+		MeterIEC2BBC   = 0x100,
+		MeterIEC2EBU   = 0x200,
+		MeterVU        = 0x400
 	};
 
 	enum TrackMode {
diff --git a/libs/ardour/enums.cc b/libs/ardour/enums.cc
index 12eb59ce65..eab3176f57 100644
--- a/libs/ardour/enums.cc
+++ b/libs/ardour/enums.cc
@@ -176,9 +176,13 @@ setup_enum_writer ()
 	REGISTER_ENUM (MeterMaxSignal);
 	REGISTER_ENUM (MeterMaxPeak);
 	REGISTER_ENUM (MeterPeak);
-	REGISTER_ENUM (MeterKrms);
-	REGISTER_ENUM (MeterIEC1);
-	REGISTER_ENUM (MeterIEC2);
+	REGISTER_ENUM (MeterRMS);
+	REGISTER_ENUM (MeterK20);
+	REGISTER_ENUM (MeterK14);
+	REGISTER_ENUM (MeterIEC1DIN);
+	REGISTER_ENUM (MeterIEC1NOR);
+	REGISTER_ENUM (MeterIEC2BBC);
+	REGISTER_ENUM (MeterIEC2EBU);
 	REGISTER_ENUM (MeterVU);
 	REGISTER (_MeterType);
 
diff --git a/libs/ardour/meter.cc b/libs/ardour/meter.cc
index 3ca19afe76..8b9ed436a4 100644
--- a/libs/ardour/meter.cc
+++ b/libs/ardour/meter.cc
@@ -106,13 +106,13 @@ PeakMeter::run (BufferSet& bufs, framepos_t /*start_frame*/, framepos_t /*end_fr
 	// Meter audio in to the rest of the peaks
 	for (uint32_t i = 0; i < n_audio; ++i, ++n) {
 		_peak_signal[n] = compute_peak (bufs.get_audio(i).data(), nframes, _peak_signal[n]);
-		if (_meter_type & MeterKrms) {
+		if (_meter_type & (MeterRMS | MeterK20 | MeterK14)) {
 			_kmeter[i]->process(bufs.get_audio(i).data(), nframes);
 		}
-		if (_meter_type & MeterIEC1) {
+		if (_meter_type & (MeterIEC1DIN | MeterIEC1NOR)) {
 			_iec1meter[i]->process(bufs.get_audio(i).data(), nframes);
 		}
-		if (_meter_type & MeterIEC2) {
+		if (_meter_type & (MeterIEC2BBC | MeterIEC2EBU)) {
 			_iec2meter[i]->process(bufs.get_audio(i).data(), nframes);
 		}
 		if (_meter_type & MeterVU) {
@@ -323,7 +323,9 @@ PeakMeter::meter ()
 float
 PeakMeter::meter_level(uint32_t n, MeterType type) {
 	switch (type) {
-		case MeterKrms:
+		case MeterRMS:
+		case MeterK20:
+		case MeterK14:
 			{
 				const uint32_t n_midi = current_meters.n_midi();
 				if ((n - n_midi) < _kmeter.size() && (n - n_midi) >= 0) {
@@ -331,7 +333,8 @@ PeakMeter::meter_level(uint32_t n, MeterType type) {
 				}
 			}
 			break;
-		case MeterIEC1:
+		case MeterIEC1DIN:
+		case MeterIEC1NOR:
 			{
 				const uint32_t n_midi = current_meters.n_midi();
 				if ((n - n_midi) < _iec1meter.size() && (n - n_midi) >= 0) {
@@ -339,7 +342,8 @@ PeakMeter::meter_level(uint32_t n, MeterType type) {
 				}
 			}
 			break;
-		case MeterIEC2:
+		case MeterIEC2BBC:
+		case MeterIEC2EBU:
 			{
 				const uint32_t n_midi = current_meters.n_midi();
 				if ((n - n_midi) < _iec2meter.size() && (n - n_midi) >= 0) {
@@ -381,19 +385,19 @@ PeakMeter::set_type(MeterType t)
 
 	_meter_type = t;
 
-	if (t & MeterKrms) {
+	if (t & (MeterRMS | MeterK20 | MeterK14)) {
 		const size_t n_audio = current_meters.n_audio();
 		for (size_t n = 0; n < n_audio; ++n) {
 			_kmeter[n]->reset();
 		}
 	}
-	if (t & MeterIEC1) {
+	if (t & (MeterIEC1DIN | MeterIEC1NOR)) {
 		const size_t n_audio = current_meters.n_audio();
 		for (size_t n = 0; n < n_audio; ++n) {
 			_iec1meter[n]->reset();
 		}
 	}
-	if (t & MeterIEC2) {
+	if (t & (MeterIEC2BBC | MeterIEC2EBU)) {
 		const size_t n_audio = current_meters.n_audio();
 		for (size_t n = 0; n < n_audio; ++n) {
 			_iec2meter[n]->reset();