Remove generic parameter-printer

This has been superseded by value_as_string() along with meta-data
from parameter-descriptor, which is supported by all standards, except VST.

libs/ardour/ardour/audio_unit.h

@@ -90,7 +90,6 @@ class LIBARDOUR_API AUPlugin : public ARDOUR::Plugin
 	std::string describe_parameter (Evoral::Parameter);
 	IOPortDescription describe_io_port (DataType dt, bool input, uint32_t id) const;
 	std::string state_node_name () const { return "audiounit"; }
-	void print_parameter (uint32_t, char*, uint32_t len) const;
 
 	bool parameter_is_audio (uint32_t) const;
 	bool parameter_is_control (uint32_t) const;

libs/ardour/ardour/ladspa_plugin.h

@@ -88,7 +88,6 @@ class LIBARDOUR_API LadspaPlugin : public ARDOUR::Plugin
 
 	std::string describe_parameter (Evoral::Parameter);
 	std::string state_node_name() const { return "ladspa"; }
-	void        print_parameter (uint32_t, char*, uint32_t len) const;
 
 	bool parameter_is_audio(uint32_t) const;
 	bool parameter_is_control(uint32_t) const;

libs/ardour/ardour/luaproc.h

@@ -92,7 +92,6 @@ public:
 			pframes_t nframes, samplecnt_t offset);
 
 	std::string describe_parameter (Evoral::Parameter);
-	void        print_parameter (uint32_t, char*, uint32_t len) const;
 	boost::shared_ptr<ScalePoints> get_scale_points(uint32_t port_index) const;
 
 	bool parameter_is_audio (uint32_t) const { return false; }

libs/ardour/ardour/lv2_plugin.h

@@ -118,10 +118,6 @@ class LIBARDOUR_API LV2Plugin : public ARDOUR::Plugin, public ARDOUR::Workee
 	std::string describe_parameter (Evoral::Parameter);
 	std::string state_node_name () const { return "lv2"; }
 
-	void print_parameter (uint32_t param,
-	                      char*    buf,
-	                      uint32_t len) const;
-
 	bool parameter_is_audio (uint32_t) const;
 	bool parameter_is_control (uint32_t) const;
 	bool parameter_is_event (uint32_t) const;

libs/ardour/ardour/plugin.h

@@ -121,7 +121,7 @@ class LIBARDOUR_API Plugin : public PBD::StatefulDestructible, public HasLatency
 	virtual std::set<Evoral::Parameter> automatable() const = 0;
 	virtual std::string describe_parameter (Evoral::Parameter) = 0;
 	virtual std::string state_node_name() const = 0;
-	virtual void print_parameter (uint32_t, char*, uint32_t len) const = 0;
+	virtual bool print_parameter (uint32_t, char*, uint32_t len) const { return false; }
 
 	virtual bool parameter_is_audio(uint32_t) const = 0;
 	virtual bool parameter_is_control(uint32_t) const = 0;

libs/ardour/ardour/vst_plugin.h

@@ -85,7 +85,7 @@ public:
 	const char * maker () const;
 	int32_t version () const;
 	uint32_t parameter_count () const;
-	void print_parameter (uint32_t, char*, uint32_t len) const;
+	bool print_parameter (uint32_t, char*, uint32_t len) const;
 
 	bool has_editor () const;
 

libs/ardour/audio_unit.cc

@@ -2035,19 +2035,6 @@ AUPlugin::describe_parameter (Evoral::Parameter param)
 	}
 }
 
-void
-AUPlugin::print_parameter (uint32_t param, char* buf, uint32_t len) const
-{
-	// NameValue stuff here
-	if (buf && len) {
-		if (param < parameter_count()) {
-			snprintf (buf, len, "%.3f", get_parameter (param));
-		} else {
-			strcat (buf, "0");
-		}
-	}
-}
-
 bool
 AUPlugin::parameter_is_audio (uint32_t) const
 {

libs/ardour/ladspa_plugin.cc

@@ -615,18 +615,6 @@ LadspaPlugin::parameter_is_input (uint32_t param) const
 	return LADSPA_IS_PORT_INPUT(port_descriptor (param));
 }
 
-void
-LadspaPlugin::print_parameter (uint32_t param, char *buf, uint32_t len) const
-{
-	if (buf && len) {
-		if (param < parameter_count()) {
-			snprintf (buf, len, "%.3f", get_parameter (param));
-		} else {
-			strcat (buf, "0");
-		}
-	}
-}
-
 boost::shared_ptr<ScalePoints>
 LadspaPlugin::get_scale_points(uint32_t port_index) const
 {

libs/ardour/luaproc.cc

@@ -1003,18 +1003,6 @@ LuaProc::describe_parameter (Evoral::Parameter param)
 	return "??";
 }
 
-void
-LuaProc::print_parameter (uint32_t param, char* buf, uint32_t len) const
-{
-	if (buf && len) {
-		if (param < parameter_count ()) {
-			snprintf (buf, len, "%.3f", get_parameter (param));
-		} else {
-			strcat (buf, "0");
-		}
-	}
-}
-
 boost::shared_ptr<ScalePoints>
 LuaProc::parse_scale_points (luabridge::LuaRef* lr)
 {

libs/ardour/lv2_plugin.cc

@@ -3066,18 +3066,6 @@ LV2Plugin::designated_bypass_port ()
 	return UINT32_MAX;
 }
 
-void
-LV2Plugin::print_parameter(uint32_t param, char* buf, uint32_t len) const
-{
-	if (buf && len) {
-		if (param < parameter_count()) {
-			snprintf(buf, len, "%.3f", get_parameter(param));
-		} else {
-			strcat(buf, "0");
-		}
-	}
-}
-
 boost::shared_ptr<ScalePoints>
 LV2Plugin::get_scale_points(uint32_t port_index) const
 {

libs/ardour/vst_plugin.cc

@@ -806,7 +806,7 @@ VSTPlugin::has_editor () const
 	return _plugin->flags & effFlagsHasEditor;
 }
 
-void
+bool
 VSTPlugin::print_parameter (uint32_t param, char *buf, uint32_t /*len*/) const
 {
 	char *first_nonws;
@@ -814,7 +814,7 @@ VSTPlugin::print_parameter (uint32_t param, char *buf, uint32_t /*len*/) const
 	_plugin->dispatcher (_plugin, 7 /* effGetParamDisplay */, param, 0, buf, 0);
 
 	if (buf[0] == '\0') {
-		return;
+		return false;
 	}
 
 	first_nonws = buf;
@@ -823,10 +823,11 @@ VSTPlugin::print_parameter (uint32_t param, char *buf, uint32_t /*len*/) const
 	}
 
 	if (*first_nonws == '\0') {
-		return;
+		return false;
 	}
 
 	memmove (buf, first_nonws, strlen (buf) - (first_nonws - buf) + 1);
+	return true;
 }
 
 void