Support mod:volts as LV2 unit

Signed-off-by: falkTX <falktx@falktx.com>

source/backend/plugin/CarlaPluginLV2.cpp

@@ -1271,6 +1271,9 @@ public:
                 case LV2_PORT_UNIT_SEMITONE:
                     std::strncpy(strBuf, "semi", STR_MAX);
                     return true;
+                case LV2_PORT_UNIT_VOLTS:
+                    std::strncpy(strBuf, "v", STR_MAX);
+                    return true;
                 }
             }
         }

source/includes/lv2_rdf.hpp

@@ -96,6 +96,7 @@ typedef uint32_t LV2_Property;
 #define LV2_PORT_UNIT_PC                 22
 #define LV2_PORT_UNIT_S                  23
 #define LV2_PORT_UNIT_SEMITONE           24
+#define LV2_PORT_UNIT_VOLTS              25
 
 #define LV2_IS_PORT_UNIT_BAR(x)          ((x) == LV2_PORT_UNIT_BAR)
 #define LV2_IS_PORT_UNIT_BEAT(x)         ((x) == LV2_PORT_UNIT_BEAT)
@@ -121,6 +122,7 @@ typedef uint32_t LV2_Property;
 #define LV2_IS_PORT_UNIT_PC(x)           ((x) == LV2_PORT_UNIT_PC)
 #define LV2_IS_PORT_UNIT_S(x)            ((x) == LV2_PORT_UNIT_S)
 #define LV2_IS_PORT_UNIT_SEMITONE(x)     ((x) == LV2_PORT_UNIT_SEMITONE)
+#define LV2_IS_PORT_UNIT_VOLTS(x)        ((x) == LV2_PORT_UNIT_VOLTS)
 
 // Port Types
 #define LV2_PORT_INPUT                   0x001

source/utils/CarlaLv2Utils.hpp

@@ -2291,6 +2291,8 @@ const LV2_RDF_Descriptor* lv2_rdf_new(const LV2_URI uri, const bool loadPresets)
                                 rdfPort->Unit.Unit = LV2_PORT_UNIT_S;
                             else if (std::strcmp(unitUnit, LV2_UNITS__semitone12TET) == 0)
                                 rdfPort->Unit.Unit = LV2_PORT_UNIT_SEMITONE;
+                            else if (std::strcmp(unitUnit, "http://moddevices.com/ns/mod#volts") == 0)
+                                rdfPort->Unit.Unit = LV2_PORT_UNIT_VOLTS;
                             else
                                 carla_stderr("lv2_rdf_new(\"%s\") - got unknown unit '%s'", uri, unitUnit);
                         }
@@ -2603,6 +2605,8 @@ const LV2_RDF_Descriptor* lv2_rdf_new(const LV2_URI uri, const bool loadPresets)
                                 rdfParam.Unit.Unit = LV2_PORT_UNIT_S;
                             else if (std::strcmp(unitUnit, LV2_UNITS__semitone12TET) == 0)
                                 rdfParam.Unit.Unit = LV2_PORT_UNIT_SEMITONE;
+                            else if (std::strcmp(unitUnit, "http://moddevices.com/ns/mod#volts") == 0)
+                                rdfParam.Unit.Unit = LV2_PORT_UNIT_VOLTS;
                             else
                                 carla_stderr("lv2_rdf_new(\"%s\") - got unknown unit '%s'", uri, unitUnit);
                         }