Show MTS Status on the Voice page (#361)

Author: baconpaul

libs/MTS-ESP

@@ -479,6 +479,10 @@ template <bool multiOut> void Synth::processInternal(const clap_output_events_t
                 AudioToUIMsg msg3{AudioToUIMsg::UPDATE_CPU_USAGE, 0, (float)(cpuUsage * 100)};
                 audioToUi.push(msg3);
 
+                AudioToUIMsg msg4{AudioToUIMsg::MTS_POINTER, 0, 0, 0, nullptr,
+                                  monoValues.mtsClient};
+                audioToUi.push(msg4);
+
                 lastVuUpdate = 0;
             }
             else

src/synth/synth.cpp

@@ -425,7 +425,8 @@ struct Synth
 
             SEND_SAMPLE_RATE,
             SET_DAW_EXTRA_STATE,
-            SET_MACRO_NAME // paramId = macro index, patchNamePointer = name buffer
+            SET_MACRO_NAME, // paramId = macro index, patchNamePointer = name buffer
+            MTS_POINTER     // dawExtraStatePointer = MTSClient* (or nullptr)
         } action;
         uint32_t paramId{0};
         float value{0}, value2{0};

src/synth/synth.h

@@ -15,6 +15,7 @@
 
 #include "playmode-sub-panel.h"
 #include <sst/jucegui/layouts/ListLayout.h>
+#include "libMTSClient.h"
 
 namespace baconpaul::six_sines::ui
 {
@@ -175,6 +176,15 @@ PlayModeSubPanel::PlayModeSubPanel(SixSinesEditor &e) : HasEditor(e)
     };
     addAndMakeVisible(*voiceLimit);
 
+    mtsTitle = std::make_unique<jcmp::RuledLabel>();
+    mtsTitle->setText("MTS");
+    addAndMakeVisible(*mtsTitle);
+    mtsStatusLabel = std::make_unique<jcmp::Label>();
+    mtsStatusLabel->setText("No MTS");
+    mtsStatusLabel->setJustification(juce::Justification::centred);
+    mtsStatusLabel->setEnabled(false);
+    addAndMakeVisible(*mtsStatusLabel);
+
     panicTitle = std::make_unique<jcmp::RuledLabel>();
     panicTitle->setText("Panic");
     panicButton = std::make_unique<jcmp::TextPushButton>();
@@ -280,6 +290,8 @@ void PlayModeSubPanel::resized()
     col4.add(jlo::Component(*mpeActiveButton).withHeight(uicLabelHeight));
     col4.add(jlo::Component(*mpeRange).withHeight(uicLabelHeight));
     col4.add(jlo::Component(*mpeRangeL).withHeight(uicLabelHeight));
+    col4.add(titleLabelGaplessLayout(mtsTitle));
+    col4.add(jlo::Component(*mtsStatusLabel).withHeight(uicLabelHeight));
     col4.add(titleLabelGaplessLayout(panicTitle));
     col4.add(jlo::Component(*panicButton).withHeight(uicLabelHeight));
     topRow.add(col4);
@@ -494,4 +506,31 @@ void PlayModeSubPanel::setPolyLimit(int plVal)
     voiceLimit->repaint();
 }
 
+void PlayModeSubPanel::updateMTSStatus()
+{
+    if (++mtsIdleCount < 50)
+        return;
+    mtsIdleCount = 0;
+
+    auto *cli = editor.mtsClient;
+    bool connected = cli && MTS_HasMaster(cli);
+    std::string text;
+    if (connected)
+    {
+        const char *name = MTS_GetScaleName(cli);
+        text = (name && *name) ? std::string(name) : std::string("Connected");
+    }
+    else
+    {
+        text = "No MTS";
+    }
+
+    if (connected != mtsConnected || text != mtsStatusLabel->getText())
+    {
+        mtsConnected = connected;
+        mtsStatusLabel->setEnabled(connected);
+        mtsStatusLabel->setText(text);
+    }
+}
+
 } // namespace baconpaul::six_sines::ui

src/ui/playmode-sub-panel.cpp

@@ -37,7 +37,12 @@ struct PlayModeSubPanel : juce::Component, HasEditor
     std::unique_ptr<jcmp::MultiSwitch> playMode;
     std::unique_ptr<PatchDiscrete> playModeD;
 
-    std::unique_ptr<jcmp::RuledLabel> bendTitle, uniTitle, mpeTitle, tsposeTitle, panicTitle;
+    std::unique_ptr<jcmp::RuledLabel> bendTitle, uniTitle, mpeTitle, tsposeTitle, panicTitle,
+        mtsTitle;
+    std::unique_ptr<jcmp::Label> mtsStatusLabel;
+    int mtsIdleCount{0};
+    bool mtsConnected{false};
+    void updateMTSStatus();
 
     std::unique_ptr<jcmp::Label> bUpL, bDnL;
     std::unique_ptr<PatchContinuous> bUpD, bDnD;

src/ui/playmode-sub-panel.h

@@ -392,12 +392,19 @@ void SixSinesEditor::idle()
         {
             settingsPanel->setCpuUsage(aum->value);
         }
+        else if (aum->action == Synth::AudioToUIMsg::MTS_POINTER)
+        {
+            mtsClient = static_cast<MTSClient *>(const_cast<void *>(aum->dawExtraStatePointer));
+        }
         else
         {
             SXSNLOG("Ignored patch message " << aum->action);
         }
         aum = audioToUI.pop();
     }
+
+    if (playModeSubPanel)
+        playModeSubPanel->updateMTSStatus();
 }
 
 void SixSinesEditor::paint(juce::Graphics &g)

src/ui/six-sines-editor.cpp

@@ -244,6 +244,10 @@ struct SixSinesEditor : jcmp::WindowPanel, sst::jucegui::screens::ScreenHolder<S
 
     std::unique_ptr<jcmp::VUMeter> vuMeter;
 
+    // Latest MTSClient pointer reported by the audio thread via MTS_POINTER messages.
+    // Read on the UI thread only; queried by PlayModeSubPanel for connection status.
+    struct MTSClient *mtsClient{nullptr};
+
     // To turn this on, recompile with it on in six-sines-editor.cpp
     void visibilityChanged() override;
     void parentHierarchyChanged() override;