encapsulate responsibility of params. add params for ADSR and filter. attempt to sync Slider. not obviously working yet.

Builds/MacOSX/juicysfplugin.xcodeproj/project.pbxproj

@@ -34,6 +34,7 @@
 		2918F46AFD2AB89F9FA847DC /* include_juce_events.mm in Sources */ = {isa = PBXBuildFile; fileRef = 373EF982A53046CE00BECE68 /* include_juce_events.mm */; };
 		2E77C6FAF1BCDB9EB29D20B9 /* PluginProcessor.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D53CAB963D5051C786D3A52D /* PluginProcessor.cpp */; };
 		305606C42BB0F2A12D382D34 /* SoundfontSynthVoice.cpp in Sources */ = {isa = PBXBuildFile; fileRef = B5A057FEC371053E83A73E47 /* SoundfontSynthVoice.cpp */; };
+		35099D9322CAA87D00CD4523 /* Params.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 35099D9122CAA87D00CD4523 /* Params.cpp */; };
 		358E458C22BEE5090087ED8D /* RecentFilesMenuTemplate.nib in Resources */ = {isa = PBXBuildFile; fileRef = 78CC5234CCFE3B170585DDAD /* RecentFilesMenuTemplate.nib */; };
 		358E458D22BEE5090087ED8D /* Accelerate.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C1616112041466F7324D7E19 /* Accelerate.framework */; };
 		358E458E22BEE5090087ED8D /* AudioToolbox.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 28CA077CDD21D0FEC66FC290 /* AudioToolbox.framework */; };
@@ -285,6 +286,11 @@
 		2C66D01D1DD9006E77E2E260 /* include_juce_data_structures.mm */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.objcpp; name = include_juce_data_structures.mm; path = ../../JuceLibraryCode/include_juce_data_structures.mm; sourceTree = SOURCE_ROOT; };
 		307CB49DF900DE4A612FF98E /* FluidSynthModel.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = FluidSynthModel.h; path = ../../Source/FluidSynthModel.h; sourceTree = SOURCE_ROOT; };
 		35099D9022CA8EF500CD4523 /* Util.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = Util.h; path = ../../Source/Util.h; sourceTree = "<group>"; };
+		35099D9122CAA87D00CD4523 /* Params.cpp */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.cpp.cpp; name = Params.cpp; path = ../../Source/Params.cpp; sourceTree = "<group>"; };
+		35099D9222CAA87D00CD4523 /* Params.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = Params.h; path = ../../Source/Params.h; sourceTree = "<group>"; };
+		35099D9422CAB0A400CD4523 /* GuiConstants.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = GuiConstants.h; path = ../../Source/GuiConstants.h; sourceTree = "<group>"; };
+		35099D9522CAB7CD00CD4523 /* SlidersFragment.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = SlidersFragment.h; path = ../../Source/SlidersFragment.h; sourceTree = "<group>"; };
+		35099D9622CAC3C800CD4523 /* SharesParams.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = SharesParams.h; path = ../../Source/SharesParams.h; sourceTree = "<group>"; };
 		35880F58CB540AD30D1B0ED3 /* TablesComponent.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = TablesComponent.h; path = ../../Source/TablesComponent.h; sourceTree = SOURCE_ROOT; };
 		358E45B422BEE53A0087ED8D /* libpcre.1.dylib */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.dylib"; path = libpcre.1.dylib; sourceTree = "<group>"; };
 		358E45B522BEE53A0087ED8D /* libvorbisenc.2.dylib */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.dylib"; path = libvorbisenc.2.dylib; sourceTree = "<group>"; };
@@ -521,6 +527,7 @@
 		403EB0CF49CF1D62BF359002 /* Source */ = {
 			isa = PBXGroup;
 			children = (
+				35099D9622CAC3C800CD4523 /* SharesParams.h */,
 				DECFA95359BC1DDDD1CC86C3 /* BankAndPreset.cpp */,
 				B000E7A360C0C86ADD3C911D /* BankAndPreset.h */,
 				F1EB35E262DC717222E2F93D /* ExposesComponents.h */,
@@ -554,6 +561,10 @@
 				358E45F922C80DCA0087ED8D /* SlidersComponent.cpp */,
 				358E45FA22C80DCA0087ED8D /* SlidersComponent.h */,
 				35099D9022CA8EF500CD4523 /* Util.h */,
+				35099D9122CAA87D00CD4523 /* Params.cpp */,
+				35099D9222CAA87D00CD4523 /* Params.h */,
+				35099D9422CAB0A400CD4523 /* GuiConstants.h */,
+				35099D9522CAB7CD00CD4523 /* SlidersFragment.h */,
 			);
 			name = Source;
 			sourceTree = "<group>";
@@ -951,6 +962,7 @@
 				7DF73014FFCCE46E228216DB /* PluginEditor.cpp in Sources */,
 				E08B3A2AF85F9FCF991F1CA2 /* include_juce_audio_basics.mm in Sources */,
 				C4D76C968347E2ACBAB5B6E7 /* include_juce_audio_devices.mm in Sources */,
+				35099D9322CAA87D00CD4523 /* Params.cpp in Sources */,
 				51C9DBCA840E334DB1804133 /* include_juce_audio_formats.mm in Sources */,
 				358E45FB22C80DCA0087ED8D /* SlidersComponent.cpp in Sources */,
 				5E5B833BBDD65F0D4271CA52 /* include_juce_audio_plugin_client_utils.cpp in Sources */,

Source/ExposesComponents.h

@@ -6,11 +6,13 @@
 #pragma once
 
 #include "FilePickerFragment.h"
+#include "SlidersFragment.h"
 
 class ExposesComponents {
 public:
     virtual ~ExposesComponents() {}
 
     virtual FilePickerFragment& getFilePicker() = 0;
+    virtual SlidersFragment& getSliders() = 0;
 
 };

Source/FluidSynthModel.cpp

@@ -8,15 +8,15 @@
 
 using namespace std;
 
-FluidSynthModel::FluidSynthModel(SharesParams& p)
+FluidSynthModel::FluidSynthModel(shared_ptr<SharesParams> sharedParams)
-        : sharesParams(p),
+        : sharedParams{sharedParams},
-          synth(nullptr),
+          synth{nullptr},
-          settings(nullptr),
+          settings{nullptr},
-          currentSoundFontAbsPath(),
+          currentSoundFontAbsPath{},
-          currentSampleRate(44100),
+          currentSampleRate{44100},
-          initialised(false),
+          initialised{false},
-          sfont_id(0),
+          sfont_id{0},
-          channel(0)/*,
+          channel{0}/*,
           mod(nullptr)*/
 
 {}
@@ -51,9 +51,9 @@ void FluidSynthModel::initialise() {
     synth = new_fluid_synth(settings);
     fluid_synth_set_sample_rate(synth, currentSampleRate);
 
-    if (sharesParams.getSoundFontPath().isNotEmpty()) {
+    if (sharedParams->getSoundFontPath().isNotEmpty()) {
-        loadFont(sharesParams.getSoundFontPath());
+        loadFont(sharedParams->getSoundFontPath());
-        changePreset(sharesParams.getBank(), sharesParams.getPreset());
+        changePreset(sharedParams->getBank(), sharedParams->getPreset());
     }
 
     fluid_synth_set_gain(synth, 2.0);
@@ -189,8 +189,8 @@ void FluidSynthModel::changePreset(int bank, int preset) {
         preset = bankAndPreset->getPreset();
     }
     changePresetImpl(bank, preset);
-    sharesParams.setPreset(preset);
+    sharedParams->setPreset(preset);
-    sharesParams.setBank(bank);
+    sharedParams->setBank(bank);
 }
 
 void FluidSynthModel::changePresetImpl(int bank, int preset) {
@@ -272,7 +272,7 @@ void FluidSynthModel::onFileNameChanged(const String &absPath, int bank, int pre
     }
     unloadAndLoadFont(absPath);
     changePreset(bank, preset);
-    sharesParams.setSoundFontPath(absPath);
+    sharedParams->setSoundFontPath(absPath);
     eventListeners.call(&FluidSynthModel::Listener::fontChanged, this, absPath);
 }
 

Source/FluidSynthModel.h

@@ -19,7 +19,7 @@ using namespace std;
 
 class FluidSynthModel {
 public:
-    FluidSynthModel(SharesParams& p);
+    FluidSynthModel(shared_ptr<SharesParams> sharedParams);
     ~FluidSynthModel();
 
     fluid_synth_t* getSynth();
@@ -65,7 +65,7 @@ public:
     const String& getCurrentSoundFontAbsPath();
 
 private:
-    SharesParams& sharesParams;
+    shared_ptr<SharesParams> sharedParams;
 
     fluid_synth_t* synth;
     fluid_settings_t* settings;

Source/GuiConstants.h

@@ -0,0 +1,8 @@
+#pragma once
+
+struct GuiConstants {
+    inline static const int minWidth = 500;
+    inline static const int maxWidth = 1900;
+    inline static const int minHeight = 300;
+    inline static const int maxHeight = 1000;
+};

Source/MidiConstants.h

@@ -162,3 +162,8 @@ enum fluid_midi_control_change
  - for case (2) or (3), FLUID_NOISE_FLOOR should be the noise floor for 16 bits (i.e -90 dB).
  */
 #define FLUID_PEAK_ATTENUATION  960.0f
+
+struct MidiConstants {
+    inline static const int midiMinValue = 0;
+    inline static const int midiMaxValue = 127;
+};

Source/Params.cpp

@@ -0,0 +1,152 @@
+//
+//  Params.cpp
+//  juicysfplugin - Shared Code
+//
+//  Created by Alex Birch on 01/07/2019.
+//  Copyright © 2019 Birchlabs. All rights reserved.
+//
+
+#include "Params.h"
+#include "../JuceLibraryCode/JuceHeader.h"
+#include "MidiConstants.h"
+#include "GuiConstants.h"
+#include "SharesParams.h"
+
+using namespace std;
+
+Params::Params() noexcept :
+    uiWidth{GuiConstants::minWidth},
+    uiHeight{GuiConstants::minHeight},
+    soundFontPath{String()},
+    preset{-1},
+    bank{-1},
+    attack{0},
+    decay{0},
+    sustain{0},
+    release{0},
+    filterCutOff{0},
+    filterResonance{0}
+{
+}
+
+void Params::setAttributesOnXml(XmlElement& xml) {
+    xml.setAttribute("uiWidth", uiWidth);
+    xml.setAttribute("uiHeight", uiHeight);
+    xml.setAttribute("soundFontPath", soundFontPath);
+    xml.setAttribute("preset", preset);
+    xml.setAttribute("bank", bank);
+    xml.setAttribute("attack", attack);
+    xml.setAttribute("decay", decay);
+    xml.setAttribute("sustain", sustain);
+    xml.setAttribute("release", release);
+    xml.setAttribute("filterCutOff", filterCutOff);
+    xml.setAttribute("filterResonance", filterResonance);
+}
+
+void Params::loadAttributesFromXml(shared_ptr<XmlElement> xmlState) {
+    uiWidth = jmin(jmax(xmlState->getIntAttribute("uiWidth", uiWidth), GuiConstants::minWidth), GuiConstants::maxWidth);
+    uiHeight = jmin(jmax(xmlState->getIntAttribute("uiHeight", uiHeight), GuiConstants::minHeight), GuiConstants::maxHeight);
+    soundFontPath = xmlState->getStringAttribute("soundFontPath", soundFontPath);
+    preset = xmlState->getIntAttribute("preset", preset);
+    bank = xmlState->getIntAttribute("bank", bank);
+    attack = jmin(jmax(xmlState->getIntAttribute("attack", attack), MidiConstants::midiMinValue), MidiConstants::midiMaxValue);
+    decay = jmin(jmax(xmlState->getIntAttribute("decay", decay), MidiConstants::midiMinValue), MidiConstants::midiMaxValue);
+    sustain = jmin(jmax(xmlState->getIntAttribute("sustain", sustain), MidiConstants::midiMinValue), MidiConstants::midiMaxValue);
+    release = jmin(jmax(xmlState->getIntAttribute("release", release), MidiConstants::midiMinValue), MidiConstants::midiMaxValue);
+    filterCutOff = jmin(jmax(xmlState->getIntAttribute("filterCutOff", filterCutOff), MidiConstants::midiMinValue), MidiConstants::midiMaxValue);
+    filterResonance = jmin(jmax(xmlState->getIntAttribute("filterResonance", filterResonance), MidiConstants::midiMinValue), MidiConstants::midiMaxValue);
+}
+
+void Params::acceptMidiControlEvent(int controller, int value) {
+    switch(static_cast<fluid_midi_control_change>(controller)) {
+        case SOUND_CTRL2: // MIDI CC 71 Timbre/Harmonic Intensity (filter resonance)
+            filterResonance = value;
+            break;
+        case SOUND_CTRL3: // MIDI CC 72 Release time
+            release = value;
+            break;
+        case SOUND_CTRL4: // MIDI CC 73 Attack time
+            attack = value;
+            break;
+        case SOUND_CTRL5: // MIDI CC 74 Brightness (cutoff frequency, FILTERFC)
+            filterCutOff = value;
+            break;
+        case SOUND_CTRL6: // MIDI CC 75 Decay Time
+            decay = value;
+            break;
+        case SOUND_CTRL10: // MIDI CC 79 undefined
+            sustain = value;
+            break;
+        default:
+            break;
+    }
+}
+
+void Params::setSoundFontPath(const String& value) {
+    soundFontPath = value;
+}
+
+String& Params::getSoundFontPath() {
+    return soundFontPath;
+}
+int Params::getPreset() {
+    return preset;
+}
+int Params::getBank() {
+    return bank;
+}
+int Params::getUiWidth() {
+    return uiWidth;
+}
+int Params::getUiHeight() {
+    return uiHeight;
+}
+int Params::getAttack() {
+    return attack;
+}
+int Params::getDecay() {
+    return decay;
+}
+int Params::getSustain() {
+    return sustain;
+}
+int Params::getRelease() {
+    return release;
+}
+int Params::getFilterCutOff() {
+    return filterCutOff;
+}
+int Params::getFilterResonance() {
+    return filterResonance;
+}
+
+void Params::setPreset(int value) {
+    preset = value;
+}
+void Params::setBank(int value) {
+    bank = value;
+}
+void Params::setUiWidth(int value) {
+    uiWidth = value;
+}
+void Params::setUiHeight(int value) {
+    uiHeight = value;
+}
+void Params::setAttack(int value) {
+    attack = value;
+}
+void Params::setDecay(int value) {
+    decay = value;
+}
+void Params::setSustain(int value) {
+    sustain = value;
+}
+void Params::setRelease(int value) {
+    release = value;
+}
+void Params::setFilterCutOff(int value) {
+    filterCutOff = value;
+}
+void Params::setFilterResonance(int value) {
+    filterResonance = value;
+}

Source/Params.h

@@ -0,0 +1,59 @@
+#pragma once
+
+#include "SharesParams.h"
+#include "../JuceLibraryCode/JuceHeader.h"
+
+using namespace std;
+
+class Params: public SharesParams {
+public:
+    Params() noexcept;
+    
+    virtual void setAttributesOnXml(XmlElement& xml) override;
+    virtual void loadAttributesFromXml(shared_ptr<XmlElement> xmlState) override;
+    virtual void acceptMidiControlEvent(int controller, int value) override;
+
+    virtual void setSoundFontPath(const String& value) override;
+    virtual String& getSoundFontPath() override;
+    virtual int getPreset() override;
+    virtual void setPreset(int value) override;
+    virtual int getBank() override;
+    virtual void setBank(int value) override;
+
+    virtual int getUiWidth() override;
+    virtual void setUiWidth(int value) override;
+    virtual int getUiHeight() override;
+    virtual void setUiHeight(int value) override;
+
+    virtual int getAttack() override;
+    virtual void setAttack(int value) override;
+    virtual int getDecay() override;
+    virtual void setDecay(int value) override;
+    virtual int getSustain() override;
+    virtual void setSustain(int value) override;
+    virtual int getRelease() override;
+    virtual void setRelease(int value) override;
+
+    virtual int getFilterCutOff() override;
+    virtual void setFilterCutOff(int value) override;
+    virtual int getFilterResonance() override;
+    virtual void setFilterResonance(int value) override;
+
+private:
+    int uiWidth;
+    int uiHeight;
+
+    String soundFontPath;
+    int preset;
+    int bank;
+
+    int attack;
+    int decay;
+    int sustain;
+    int release;
+
+    int filterCutOff;
+    int filterResonance;
+    
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (Params)
+};

Source/PluginEditor.cpp

@@ -10,20 +10,26 @@
 
 #include "PluginProcessor.h"
 #include "PluginEditor.h"
+#include "GuiConstants.h"
 
 //==============================================================================
 JuicySFAudioProcessorEditor::JuicySFAudioProcessorEditor(JuicySFAudioProcessor& p)
-    : AudioProcessorEditor (&p),
+    : AudioProcessorEditor{&p},
-      processor (p),
+      processor{p},
-      midiKeyboard (p.keyboardState, SurjectiveMidiKeyboardComponent::horizontalKeyboard),
+      sharedParams{p.sharedParams},
-      tablesComponent(p.getFluidSynthModel()),
+      midiKeyboard{p.keyboardState, SurjectiveMidiKeyboardComponent::horizontalKeyboard},
-      filePicker(p.getFluidSynthModel()),
+      tablesComponent{p.getFluidSynthModel()},
-      slidersComponent{p.getFluidSynthModel()}
+      filePicker{p.getFluidSynthModel()},
+      slidersComponent{p.sharedParams, p.getFluidSynthModel()}
 {
     // set resize limits for this plug-in
-    setResizeLimits (500, 300, 1900, 1000);
+    setResizeLimits(
+        GuiConstants::minWidth,
+        GuiConstants::minHeight,
+        GuiConstants::maxWidth,
+        GuiConstants::maxHeight);
 
-    setSize (p.lastUIWidth, p.lastUIHeight);
+    setSize(sharedParams->getUiWidth(), sharedParams->getUiHeight());
 
 //    processor.subscribeToStateChanges(this);
 
@@ -97,9 +103,8 @@ void JuicySFAudioProcessorEditor::resized()
 
     tablesComponent.setBounds(rContent);
 
-
+    sharedParams->setUiWidth(getWidth());
-    processor.lastUIWidth = getWidth();
+    sharedParams->setUiHeight(getHeight());
-    processor.lastUIHeight = getHeight();
 
 //    Rectangle<int> r2 (getLocalBounds());
 //    r2.reduce(0, padding);
@@ -151,3 +156,7 @@ bool JuicySFAudioProcessorEditor::keyStateChanged (bool isKeyDown) {
 FilePickerFragment& JuicySFAudioProcessorEditor::getFilePicker() {
     return filePicker;
 }
+
+SlidersFragment& JuicySFAudioProcessorEditor::getSliders() {
+    return slidersComponent;
+}

Source/PluginEditor.h

@@ -42,12 +42,15 @@ public:
 //    void setStateInformation (XmlElement* xmlState) override;
 
     virtual FilePickerFragment& getFilePicker() override;
+    virtual SlidersFragment& getSliders() override;
 
 private:
     // This reference is provided as a quick way for your editor to
     // access the processor object that created it.
     JuicySFAudioProcessor& processor;
 
+    shared_ptr<SharesParams> sharedParams;
+
     SurjectiveMidiKeyboardComponent midiKeyboard;
     TablesComponent tablesComponent;
     FilePicker filePicker;

Source/PluginProcessor.cpp

@@ -15,19 +15,20 @@
 #include "ExposesComponents.h"
 #include "MidiConstants.h"
 #include "Util.h"
+#include "SharesParams.h"
+#include "Params.h"
+
+using namespace std;
 
 AudioProcessor* JUCE_CALLTYPE createPluginFilter();
 
 
 //==============================================================================
 JuicySFAudioProcessor::JuicySFAudioProcessor()
-     : AudioProcessor (getBusesProperties()),
+     : AudioProcessor{getBusesProperties()},
-       lastUIWidth(400),
+       sharedParams{static_pointer_cast<SharesParams>(make_shared<Params>())},
-       lastUIHeight(300),
+       fluidSynthModel{sharedParams}/*,
-       soundFontPath(String()),
+       fluidSynthModel{*this},
-       lastPreset(-1),
-       lastBank(-1),
-       fluidSynthModel(*this)/*,
        pluginEditor(nullptr)*/
 {
     initialiseSynth();
@@ -168,6 +169,11 @@ void JuicySFAudioProcessor::processBlock (AudioBuffer<float>& buffer, MidiBuffer
         // responsibilities of SoundfontSynthVoice.
         // well, by that logic maybe I should move program change onto Voice. but it doesn't feel like a per-voice concern.
         if (m.isController()) {
+            // shared_ptr<fluid_midi_event_t> midi_event{
+            //     new_fluid_midi_event(),
+            //     [](fluid_midi_event_t *event) {
+            //         delete_fluid_midi_event(midi_event);
+            //     }};
             fluid_midi_event_t *midi_event(new_fluid_midi_event());
             fluid_midi_event_set_type(midi_event, static_cast<int>(CONTROL_CHANGE));
             fluid_midi_event_set_channel(midi_event, fluidSynthModel.getChannel());
@@ -175,6 +181,13 @@ void JuicySFAudioProcessor::processBlock (AudioBuffer<float>& buffer, MidiBuffer
             fluid_midi_event_set_value(midi_event, m.getControllerValue());
             fluid_synth_handle_midi_event(fluidSynth, midi_event);
             delete_fluid_midi_event(midi_event);
+            
+            sharedParams->acceptMidiControlEvent(m.getControllerNumber(), m.getControllerValue());
+            
+            AudioProcessorEditor* editor{getActiveEditor()};
+            jassert(dynamic_cast<ExposesComponents*> (editor) != nullptr);
+            ExposesComponents* exposesComponents{dynamic_cast<ExposesComponents*>(editor)};
+            exposesComponents->getSliders().acceptMidiControlEvent(m.getControllerNumber(), m.getControllerValue());
         } else if (m.isProgramChange()) {
             fluid_midi_event_t *midi_event(new_fluid_midi_event());
             fluid_midi_event_set_type(midi_event, static_cast<int>(PROGRAM_CHANGE));
@@ -266,14 +279,8 @@ void JuicySFAudioProcessor::getStateInformation (MemoryBlock& destData)
     // as intermediaries to make it easy to save and load complex data.
 
     // Create an outer XML element..
-    XmlElement xml ("MYPLUGINSETTINGS");
+    XmlElement xml{"MYPLUGINSETTINGS"};
-
+    sharedParams->setAttributesOnXml(xml);
-    // add some attributes to it..
-    xml.setAttribute ("uiWidth", lastUIWidth);
-    xml.setAttribute ("uiHeight", lastUIHeight);
-    xml.setAttribute ("soundFontPath", soundFontPath);
-    xml.setAttribute ("preset", lastPreset);
-    xml.setAttribute ("bank", lastBank);
 
 //    list<StateChangeSubscriber*>::iterator p;
 //    for(p = stateChangeSubscribers.begin(); p != stateChangeSubscribers.end(); p++) {
@@ -294,7 +301,7 @@ void JuicySFAudioProcessor::setStateInformation (const void* data, int sizeInByt
     // You should use this method to restore your parameters from this memory block,
     // whose contents will have been created by the getStateInformation() call.
     // This getXmlFromBinary() helper function retrieves our XML from the binary blob..
-    ScopedPointer<XmlElement> xmlState (getXmlFromBinary (data, sizeInBytes));
+    shared_ptr<XmlElement> xmlState{getXmlFromBinary(data, sizeInBytes)};
 
     if (xmlState != nullptr)
     {
@@ -307,26 +314,27 @@ void JuicySFAudioProcessor::setStateInformation (const void* data, int sizeInByt
 //            }
 
             // ok, now pull out our last window size..
-            lastUIWidth  = jmax (xmlState->getIntAttribute ("uiWidth", lastUIWidth), 400);
+            sharedParams->loadAttributesFromXml(xmlState);
-            lastUIHeight = jmax (xmlState->getIntAttribute ("uiHeight", lastUIHeight), 300);
-            soundFontPath = xmlState->getStringAttribute ("soundFontPath", soundFontPath);
-            lastPreset = xmlState->getIntAttribute ("preset", lastPreset);
-            lastBank = xmlState->getIntAttribute ("bank", lastBank);
 
             // Now reload our parameters..
             for (auto* param : getParameters())
                 if (auto* p = dynamic_cast<AudioProcessorParameterWithID*> (param))
                     p->setValue ((float) xmlState->getDoubleAttribute (p->paramID, p->getValue()));
 
-            fluidSynthModel.onFileNameChanged(soundFontPath, lastBank, lastPreset);
+            fluidSynthModel.onFileNameChanged(
+                sharedParams->getSoundFontPath(),
+                sharedParams->getBank(),
+                sharedParams->getPreset());
 
-            AudioProcessorEditor* editor = getActiveEditor();
+            AudioProcessorEditor* editor{getActiveEditor()};
             if (editor != nullptr) {
-                editor->setSize(lastUIWidth, lastUIHeight);
+                editor->setSize(
+                    sharedParams->getUiWidth(),
+                    sharedParams->getUiHeight());
 
                 jassert(dynamic_cast<ExposesComponents*> (editor) != nullptr);
                 ExposesComponents* exposesComponents = dynamic_cast<ExposesComponents*> (editor);
-                exposesComponents->getFilePicker().setDisplayedFilePath(soundFontPath);
+                exposesComponents->getFilePicker().setDisplayedFilePath(sharedParams->getSoundFontPath());
             }
 
 //            const String& currentSoundFontAbsPath = fluidSynthModel->getCurrentSoundFontAbsPath();
@@ -354,26 +362,6 @@ FluidSynthModel* JuicySFAudioProcessor::getFluidSynthModel() {
     return &fluidSynthModel;
 }
 
-void JuicySFAudioProcessor::setSoundFontPath(const String& value) {
-    soundFontPath = value;
-}
-
-String& JuicySFAudioProcessor::getSoundFontPath() {
-    return soundFontPath;
-}
-int JuicySFAudioProcessor::getPreset() {
-    return lastPreset;
-}
-int JuicySFAudioProcessor::getBank() {
-    return lastBank;
-}
-void JuicySFAudioProcessor::setPreset(int preset) {
-    lastPreset = preset;
-}
-void JuicySFAudioProcessor::setBank(int bank) {
-    lastBank = bank;
-}
-
 //==============================================================================
 // This creates new instances of the plugin..
 AudioProcessor* JUCE_CALLTYPE createPluginFilter()

Source/PluginProcessor.h

@@ -21,8 +21,7 @@ using namespace std;
 //==============================================================================
 /**
 */
-class JuicySFAudioProcessor  : public AudioProcessor,
+class JuicySFAudioProcessor  : public AudioProcessor
-                               public SharesParams
 {
 public:
     //==============================================================================
@@ -67,25 +66,14 @@ public:
 
     MidiKeyboardState keyboardState;
 
-    virtual void setSoundFontPath(const String& value) override;
+    shared_ptr<SharesParams> sharedParams;
-    virtual String& getSoundFontPath() override;
-    virtual int getPreset() override;
-    virtual void setPreset(int preset) override;
-    virtual int getBank() override;
-    virtual void setBank(int bank) override;
 
 //    void subscribeToStateChanges(StateChangeSubscriber* subscriber);
 //    void unsubscribeFromStateChanges(StateChangeSubscriber* subscriber);
 
-    int lastUIWidth, lastUIHeight;
-
 private:
     void initialiseSynth();
 
-    String soundFontPath;
-    int lastPreset;
-    int lastBank;
-
     FluidSynthModel fluidSynthModel;
     fluid_synth_t* fluidSynth;
     Synthesiser synth;

Source/SharesParams.h

@@ -7,16 +7,42 @@
 
 #include "../JuceLibraryCode/JuceHeader.h"
 
+using namespace std;
+
 class SharesParams {
 public:
     virtual ~SharesParams() {}
 
+    virtual void setAttributesOnXml(XmlElement& xml) = 0;
+    virtual void loadAttributesFromXml(shared_ptr<XmlElement> xmlState) = 0;
+    virtual void acceptMidiControlEvent(int controller, int value) = 0;
+
     virtual void setSoundFontPath(const String& value) = 0;
     virtual String& getSoundFontPath() = 0;
     virtual int getPreset() = 0;
-    virtual void setPreset(int preset) = 0;
+    virtual void setPreset(int value) = 0;
     virtual int getBank() = 0;
-    virtual void setBank(int bank) = 0;
+    virtual void setBank(int value) = 0;
+
+    virtual int getUiWidth() = 0;
+    virtual void setUiWidth(int value) = 0;
+    virtual int getUiHeight() = 0;
+    virtual void setUiHeight(int value) = 0;
+    
+    virtual int getAttack() = 0;
+    virtual void setAttack(int value) = 0;
+    virtual int getDecay() = 0;
+    virtual void setDecay(int value) = 0;
+    virtual int getSustain() = 0;
+    virtual void setSustain(int value) = 0;
+    virtual int getRelease() = 0;
+    virtual void setRelease(int value) = 0;
+
+    virtual int getFilterCutOff() = 0;
+    virtual void setFilterCutOff(int value) = 0;
+    virtual int getFilterResonance() = 0;
+    virtual void setFilterResonance(int value) = 0;
+    
 };
 
 

Source/SlidersComponent.cpp

@@ -10,10 +10,11 @@
 #include "FluidSynthModel.h"
 #include "MidiConstants.h"
 
-std::function<void()> SlidersComponent::makeSliderListener(Slider& slider, int controller) {
+std::function<void()> SlidersComponent::makeSliderListener(Slider& slider, int controller/*, std::function<void()> callback*/) {
     return [this, controller, &slider]{
 //        slider.setValue(slider.getValue(), NotificationType::dontSendNotification);
         fluidSynthModel->setControllerValue(controller, slider.getValue());
+        // callback();
     };
 }
 
@@ -58,7 +59,54 @@ void SlidersComponent::resized() {
     filterResonanceSlider.setBounds(rFilter.removeFromLeft(sliderWidth + sliderXMargin).withTrimmedTop(labelHeight).withTrimmedLeft(sliderXMargin));
 }
 
-SlidersComponent::SlidersComponent(FluidSynthModel* fluidSynthModel) :
+void SlidersComponent::acceptMidiControlEvent(int controller, int value) {
+    switch(static_cast<fluid_midi_control_change>(controller)) {
+        case SOUND_CTRL2: // MIDI CC 71 Timbre/Harmonic Intensity (filter resonance)
+            filterResonanceSlider.setValue(value, NotificationType::dontSendNotification);
+            break;
+        case SOUND_CTRL3: // MIDI CC 72 Release time
+            releaseSlider.setValue(value, NotificationType::dontSendNotification);
+            break;
+        case SOUND_CTRL4: // MIDI CC 73 Attack time
+            attackSlider.setValue(value, NotificationType::dontSendNotification);
+            break;
+        case SOUND_CTRL5: // MIDI CC 74 Brightness (cutoff frequency, FILTERFC)
+            filterCutOffSlider.setValue(value, NotificationType::dontSendNotification);
+            break;
+        case SOUND_CTRL6: // MIDI CC 75 Decay Time
+            decaySlider.setValue(value, NotificationType::dontSendNotification);
+            break;
+        case SOUND_CTRL10: // MIDI CC 79 undefined
+            sustainSlider.setValue(value, NotificationType::dontSendNotification);
+            break;
+        default:
+            break;
+    }
+}
+
+// void SlidersComponent::updateAttackSlider(int value) {
+//     attackSlider.setValue(value, NotificationType::dontSendNotification);
+// }
+// void SlidersComponent::updateDecaySlider(int value) {
+//     decaySlider.setValue(value, NotificationType::dontSendNotification);
+// }
+// void SlidersComponent::updateSustainSlider(int value) {
+//     sustainSlider.setValue(value, NotificationType::dontSendNotification);
+// }
+// void SlidersComponent::updateReleaseSlider(int value) {
+//     releaseSlider.setValue(value, NotificationType::dontSendNotification);
+// }
+// void SlidersComponent::updateFilterCutOffSlider(int value) {
+//     filterCutOffSlider.setValue(value, NotificationType::dontSendNotification);
+// }
+// void SlidersComponent::updateFilterResonanceSlider(int value) {
+//     filterResonanceSlider.setValue(value, NotificationType::dontSendNotification);
+// }
+
+SlidersComponent::SlidersComponent(
+    shared_ptr<SharesParams> sharedParams,
+    FluidSynthModel* fluidSynthModel) :
+sharedParams{sharedParams},
 fluidSynthModel{fluidSynthModel},
 envelopeGroup{"envelopeGroup", "Envelope"},
 filterGroup{"filterGroup", "Filter"}

Source/SlidersComponent.h

@@ -2,22 +2,38 @@
 
 #include "../JuceLibraryCode/JuceHeader.h"
 #include "FluidSynthModel.h"
+#include "SharesParams.h"
+#include "SlidersFragment.h"
 
 using namespace std;
 
-class SlidersComponent : public Component
+class SlidersComponent : public Component,
+                         public SlidersFragment
 {
 public:
-    SlidersComponent(FluidSynthModel* fluidSynthModel);
+    SlidersComponent(
+        shared_ptr<SharesParams> sharedParams,
+        FluidSynthModel* fluidSynthModel);
     ~SlidersComponent();
 
     void resized() override;
 
     const int getDesiredWidth();
 
+    virtual void acceptMidiControlEvent(int controller, int value) override;
+    
+    // virtual void updateAttackSlider(int value) override;
+    // virtual void updateDecaySlider(int value) override;
+    // virtual void updateSustainSlider(int value) override;
+    // virtual void updateReleaseSlider(int value) override;
+    
+    // virtual void updateFilterCutOffSlider(int value) override;
+    // virtual void updateFilterResonanceSlider(int value) override;
+
 private:
     std::function<void()> makeSliderListener(Slider& slider, int controller);
 
+    shared_ptr<SharesParams> sharedParams;
     FluidSynthModel* fluidSynthModel;
 
     GroupComponent envelopeGroup;

Source/SlidersFragment.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "../JuceLibraryCode/JuceHeader.h"
+
+class SlidersFragment {
+public:
+    virtual ~SlidersFragment() {}
+
+    virtual void acceptMidiControlEvent(int controller, int value) = 0;
+    
+    // virtual void updateAttackSlider(int value) = 0;
+    // virtual void updateDecaySlider(int value) = 0;
+    // virtual void updateSustainSlider(int value) = 0;
+    // virtual void updateReleaseSlider(int value) = 0;
+
+    // virtual void updateFilterCutOffSlider(int value) = 0;
+    // virtual void updateFilterResonanceSlider(int value) = 0;
+};