Async UI update from audio thread

Source/PluginData.cpp

@@ -194,7 +194,7 @@ void DexedAudioProcessor::packProgram(int idx, const char *name) {
 
 void DexedAudioProcessor::updateProgramFromSysex(const uint8 *rawdata) {
     memcpy(data, rawdata, 160);
-    refreshUI = true;
+    triggerAsyncUpdate();
 }
 
 void DexedAudioProcessor::loadBuiltin(int idx) {

Source/PluginEditor.cpp

@@ -250,8 +250,6 @@ void DexedAudioProcessorEditor::timerCallback() {
     int32_t env[6];
     
     if ( processor->refreshUI ) {
-        if ( processor->refreshUI & DexedAudioProcessor::REFRESH_COMP )
-            updateUI();
         if ( processor->refreshUI & DexedAudioProcessor::REFRESH_MSG )
             global.repaint();
         processor->refreshUI = 0;

Source/PluginParam.cpp

@@ -417,7 +417,7 @@ void DexedAudioProcessor::setCurrentProgram(int index) {
     unpackProgram(index);
     lfo.reset(data + 137);
     currentProgram = index;
-    updateUI();
+    triggerAsyncUpdate();
 }
 
 const String DexedAudioProcessor::getProgramName(int index) {

Source/PluginProcessor.cpp

@@ -28,6 +28,7 @@
 #include "msfa/pitchenv.h"
 #include "msfa/aligned_buf.h"
 
+
 //==============================================================================
 DexedAudioProcessor::DexedAudioProcessor() {
 #ifdef DEBUG
@@ -189,7 +190,7 @@ void DexedAudioProcessor::processMidiMessage(MidiMessage *msg) {
             }
             TRACE("program update sysex");
             updateProgramFromSysex(buf+4);
-            refreshUI |= REFRESH_COMP;
+            triggerAsyncUpdate();
             return;
         }
 
@@ -202,7 +203,7 @@ void DexedAudioProcessor::processMidiMessage(MidiMessage *msg) {
             TRACE("update 32bulk voice)");
             importSysex((const char *)buf+4);
             currentProgram = 0;
-            refreshUI |= REFRESH_COMP;
+            triggerAsyncUpdate();
         }
         return;
     }
@@ -222,6 +223,8 @@ void DexedAudioProcessor::processMidiMessage(MidiMessage *msg) {
         case 0xb0 : {
             int controller = buf[1];
             int value = buf[2];
+            
+            // pedal
             if (controller == 64) {
                 sustain = value != 0;
                 if (!sustain) {
@@ -417,6 +420,9 @@ bool DexedAudioProcessor::hasEditor() const {
 
 
 void DexedAudioProcessor::updateUI() {
+    // notify host something has changed
+    updateHostDisplay();
+    
     AudioProcessorEditor *editor = getActiveEditor();
     if ( editor == NULL ) {
         return;
@@ -429,6 +435,11 @@ AudioProcessorEditor* DexedAudioProcessor::createEditor() {
     return new DexedAudioProcessorEditor (this);
 }
 
+void DexedAudioProcessor::handleAsyncUpdate() {
+   updateUI();
+}
+
+
 void DexedAudioProcessor::log(const char *source, const char *fmt, ...) {
     char output[4096];
     va_list argptr;

Source/PluginProcessor.h

@@ -41,7 +41,7 @@ struct ProcessorVoice {
 //==============================================================================
 /**
 */
-class DexedAudioProcessor  : public AudioProcessor
+class DexedAudioProcessor  : public AudioProcessor, public AsyncUpdater
 {
     static const int MAX_ACTIVE_NOTES = 16;
     ProcessorVoice voices[MAX_ACTIVE_NOTES];
@@ -89,13 +89,17 @@ class DexedAudioProcessor  : public AudioProcessor
     void keydown(uint8_t pitch, uint8_t velo);
     void keyup(uint8_t pitch);
     void processSamples(int n_samples, int16_t *buffer);
-
+    
+    /**
+     * this is called from the Audio thread to tell
+     * to update the UI / hostdata 
+     */
+    void handleAsyncUpdate();
+    
     void initCtrl();
 
 public :
     static const int REFRESH_MSG = 1;
-    static const int REFRESH_COMP = 1 << 1;
-    
     int refreshUI;
 
     char data[161];