AAX Client: Add dirty state reporting via updateHostDisplay

modules/juce_audio_plugin_client/AAX/juce_AAX_Wrapper.cpp

@@ -900,6 +900,13 @@ namespace AAXClasses
             }
         }
 
+        AAX_Result GetNumberOfChanges (int32_t* numChanges) const override
+        {
+            const auto result = AAX_CEffectParameters::GetNumberOfChanges (numChanges);
+            *numChanges += numSetDirtyCalls;
+            return result;
+        }
+
         AAX_Result UpdateParameterNormalizedValue (AAX_CParamID paramID, double value, AAX_EUpdateSource source) override
         {
             auto result = AAX_CEffectParameters::UpdateParameterNormalizedValue (paramID, value, source);
@@ -1107,6 +1114,9 @@ namespace AAXClasses
 
             if (details.latencyChanged)
                 check (Controller()->SetSignalLatency (processor->getLatencySamples()));
+
+            if (details.nonParameterStateChanged)
+                ++numSetDirtyCalls;
         }
 
         void audioProcessorParameterChangeGestureBegin (AudioProcessor*, int parameterIndex) override
@@ -1999,7 +2009,7 @@ namespace AAXClasses
         bool isPrepared = false;
         MidiBuffer midiBuffer;
         Array<float*> channelList;
-        int32_t juceChunkIndex = 0;
+        int32_t juceChunkIndex = 0, numSetDirtyCalls = 0;
         AAX_CSampleRate sampleRate = 0;
         int lastBufferSize = 1024, maxBufferSize = 1024;
         bool hasSidechain = false, canDisableSidechain = false, lastSideChainState = false;