VST2: Ensured that the VST2 version number is encoded correctly for display in Cubase and when hosting VST2 plug-ins in JUCE

modules/juce_audio_plugin_client/VST/juce_VST_Wrapper.cpp

@@ -295,9 +295,9 @@ public:
         vstEffect.plugInIdentifier = JucePlugin_VSTUniqueID;
 
        #ifdef JucePlugin_VSTChunkStructureVersion
-        vstEffect.plugInVersion = convertHexVersionToDecimal (JucePlugin_VSTChunkStructureVersion);
+        vstEffect.plugInVersion = JucePlugin_VSTChunkStructureVersion;
        #else
-        vstEffect.plugInVersion = convertHexVersionToDecimal (JucePlugin_VersionCode);
+        vstEffect.plugInVersion = JucePlugin_VersionCode;
        #endif
 
         vstEffect.processAudioInplaceFunction = processReplacingCB;
@@ -1483,10 +1483,27 @@ private:
        #if JUCE_VST_RETURN_HEX_VERSION_NUMBER_DIRECTLY
         return (int32) hexVersion;
        #else
-        return (int32) (((hexVersion >> 24) & 0xff) * 1000
-                         + ((hexVersion >> 16) & 0xff) * 100
-                         + ((hexVersion >> 8)  & 0xff) * 10
-                         + (hexVersion & 0xff));
+        // Currently, only Cubase displays the version number to the user
+        // We are hoping here that when other DAWs start to display the version
+        // number, that they do so according to yfede's encoding table in the link
+        // below. If not, then this code will need an if (isSteinberg()) in the
+        // future.
+        auto major = (hexVersion >> 16) & 0xff;
+        auto minor = (hexVersion >> 8) & 0xff;
+        auto bugfix = hexVersion & 0xff;
+
+        // for details, see: https://forum.juce.com/t/issues-with-version-integer-reported-by-vst2/23867
+
+        // Encoding B
+        if (major < 1)
+            return major * 1000 + minor * 100 + bugfix * 10;
+
+        // Encoding E
+        if (major > 100)
+            return major * 10000000 + minor * 100000 + bugfix * 1000;
+
+        // Encoding D
+        return hexVersion;
        #endif
     }
 

modules/juce_audio_processors/format_types/juce_VSTPluginFormat.cpp

@@ -1971,32 +1971,44 @@ private:
 
         if (v != 0)
         {
-            int versionBits[32];
-            int n = 0;
+            // See yfede's post for the rational on this encoding
+            // https://forum.juce.com/t/issues-with-version-integer-reported-by-vst2/23867/6
 
-            for (auto vv = v; vv != 0; vv /= 10)
-                versionBits [n++] = vv % 10;
+            auto major = 0, minor = 0, build = 0, bugfix = 0;
 
-            if (n > 4) // if the number ends up silly, it's probably encoded as hex instead of decimal..
+            if (v < 10)            // Encoding A
             {
-                n = 0;
-
-                for (auto vv = v; vv != 0; vv >>= 8)
-                    versionBits [n++] = vv & 255;
+                major = v;
             }
-
-            while (n > 1 && versionBits [n - 1] == 0)
-                --n;
-
-            s << 'V';
-
-            while (n > 0)
+            else if (v < 10000)    // Encoding B
             {
-                s << versionBits [--n];
-
-                if (n > 0)
-                    s << '.';
+                major  = (v / 1000);
+                minor  = (v % 1000) / 100;
+                build  = (v % 100)  / 10;
+                bugfix = (v % 10);
+            }
+            else if (v < 0x10000)  // Encoding C
+            {
+                major  = (v / 10000);
+                minor  = (v % 10000) / 1000;
+                build  = (v % 1000)  / 100;
+                bugfix = (v % 100)   / 10;
+            }
+            else if (v < 0x650000) // Encoding D
+            {
+                major  = (v >> 16) & 0xff;
+                minor  = (v >> 8)  & 0xff;
+                build  = (v >> 0)  & 0xff;
             }
+            else                  // Encoding E
+            {
+                major  = (v / 10000000);
+                minor  = (v % 10000000) / 100000;
+                build  = (v % 100000)   / 1000;
+                bugfix = (v % 1000);
+            }
+
+            s << major << '.' << minor << '.' << build << '.' << bugfix;
         }
 
         return s;