MCU: make EQ subview show actual values, not just decimal between 0 and 1

libs/surfaces/mackie/strip.cc

@@ -24,6 +24,7 @@
 #include <sstream>
 #include <vector>
 #include <climits>
+#include <regex>
 
 #include <stdint.h>
 
@@ -711,6 +712,16 @@ Strip::handle_button (Button& button, ButtonState bs)
 	}
 }
 
+std::string
+Strip::remove_units (std::string s) {
+       s = std::regex_replace (s, std::regex(" kHz$"), "k");
+       s = std::regex_replace (s, std::regex(" Hz$"), "");
+       s = std::regex_replace (s, std::regex(" dB$"), "");
+       s = std::regex_replace (s, std::regex(" ms$"), "");
+
+       return s;
+}
+
 std::string
 Strip::format_parameter_for_display(
 		ARDOUR::ParameterDescriptor const& desc,

libs/surfaces/mackie/strip.h

@@ -92,6 +92,8 @@ public:
 	MidiByteArray display (uint32_t lcd_number, uint32_t line_number, const std::string&);
 	MidiByteArray blank_display (uint32_t lcd_number, uint32_t line_number);
 	
+	static std::string remove_units (std::string s);
+
 	static std::string format_parameter_for_display(
 		ARDOUR::ParameterDescriptor const& desc, 
 		float val, 

libs/surfaces/mackie/subview.cc

@@ -410,7 +410,7 @@ void EQSubview::notify_change (std::weak_ptr<ARDOUR::AutomationControl> pc, uint
 	std::shared_ptr<AutomationControl> control = pc.lock ();
 	if (control) {
 		float val = control->get_value();
-		do_parameter_display(pending_display[1], control->desc(), val, strip, true);
+		pending_display[1] = Strip::remove_units(control->get_user_string());
 		/* update pot/encoder */
 		strip->surface()->write (vpot->set (control->internal_to_interface (val), true, Pot::wrap));
 	}