Allow to skip MIDI ports in patchbay plugin, in use for OBS

Signed-off-by: falkTX <falktx@falktx.com>

source/backend/engine/CarlaEngineGraph.cpp

@@ -1749,7 +1749,8 @@ private:
 
 PatchbayGraph::PatchbayGraph(CarlaEngine* const engine,
                              const uint32_t audioIns, const uint32_t audioOuts,
-                             const uint32_t cvIns, const uint32_t cvOuts)
+                             const uint32_t cvIns, const uint32_t cvOuts,
+                             const bool withMidiIn, const bool withMidiOut)
     : CarlaRunner("PatchbayReorderRunner"),
       connections(),
       graph(),
@@ -1858,6 +1859,7 @@ PatchbayGraph::PatchbayGraph(CarlaEngine* const engine,
         node->properties.isOSC = false;
     }
 
+    if (withMidiIn)
     {
         NamedAudioGraphIOProcessor* const proc(
             new NamedAudioGraphIOProcessor(NamedAudioGraphIOProcessor::midiInputNode));
@@ -1870,6 +1872,7 @@ PatchbayGraph::PatchbayGraph(CarlaEngine* const engine,
         node->properties.isOSC = false;
     }
 
+    if (withMidiOut)
     {
         NamedAudioGraphIOProcessor* const proc(
             new NamedAudioGraphIOProcessor(NamedAudioGraphIOProcessor::midiOutputNode));
@@ -2663,7 +2666,8 @@ EngineInternalGraph::~EngineInternalGraph() noexcept
 }
 
 void EngineInternalGraph::create(const uint32_t audioIns, const uint32_t audioOuts,
-                                 const uint32_t cvIns, const uint32_t cvOuts)
+                                 const uint32_t cvIns, const uint32_t cvOuts,
+                                 const bool withMidiIn, const bool withMidiOut)
 {
     fIsRack = (kEngine->getOptions().processMode == ENGINE_PROCESS_MODE_CONTINUOUS_RACK);
 
@@ -2675,7 +2679,7 @@ void EngineInternalGraph::create(const uint32_t audioIns, const uint32_t audioOu
     else
     {
         CARLA_SAFE_ASSERT_RETURN(fPatchbay == nullptr,);
-        fPatchbay = new PatchbayGraph(kEngine, audioIns, audioOuts, cvIns, cvOuts);
+        fPatchbay = new PatchbayGraph(kEngine, audioIns, audioOuts, cvIns, cvOuts, withMidiIn, withMidiOut);
     }
 
     fNumAudioOuts = audioOuts;

source/backend/engine/CarlaEngineGraph.hpp

@@ -184,7 +184,8 @@ public:
 
     PatchbayGraph(CarlaEngine* engine,
                   uint32_t audioIns, uint32_t audioOuts,
-                  uint32_t cvIns, uint32_t cvOuts);
+                  uint32_t cvIns, uint32_t cvOuts,
+                  bool withMidiIn, bool withMidiOut);
     ~PatchbayGraph();
 
     void setBufferSize(uint32_t bufferSize);

source/backend/engine/CarlaEngineInternal.hpp

@@ -80,7 +80,9 @@ public:
     EngineInternalGraph(CarlaEngine* engine) noexcept;
     ~EngineInternalGraph() noexcept;
 
-    void create(uint32_t audioIns, uint32_t audioOuts, uint32_t cvIns, uint32_t cvOuts);
+    void create(uint32_t audioIns, uint32_t audioOuts,
+                uint32_t cvIns, uint32_t cvOuts,
+                bool withMidiIn = true, bool withMidiOut = true);
     void destroy() noexcept;
 
     void setBufferSize(uint32_t bufferSize);

source/backend/engine/CarlaEngineNative.cpp

@@ -101,7 +101,8 @@ private:
 class CarlaEngineNative : public CarlaEngine
 {
 public:
-    CarlaEngineNative(const NativeHostDescriptor* const host, const bool isPatchbay, const bool withMidiOut,
+    CarlaEngineNative(const NativeHostDescriptor* const host, const bool isPatchbay,
+                      const bool withMidiIn, const bool withMidiOut,
                       const uint32_t inChan = 2, uint32_t outChan = 2,
                       const uint32_t cvIns = 0, const uint32_t cvOuts = 0)
         : CarlaEngine(),
@@ -114,6 +115,7 @@ public:
           fJuceMsgMutex(),
 #endif
           kIsPatchbay(isPatchbay),
+          kHasMidiIn(withMidiIn),
           kHasMidiOut(withMidiOut),
           fIsActive(false),
           fIsRunning(false),
@@ -158,7 +160,7 @@ public:
             pData->options.preferPluginBridges = false;
             pData->options.preferUiBridges     = false;
             init("Carla-Patchbay");
-            pData->graph.create(inChan, outChan, cvIns, cvOuts);
+            pData->graph.create(inChan, outChan, cvIns, cvOuts, withMidiIn, withMidiOut);
         }
         else
         {
@@ -1154,6 +1156,7 @@ protected:
         // ---------------------------------------------------------------
         // events input (before processing)
 
+        if (kHasMidiIn)
         {
             uint32_t engineEventIndex = 0;
 
@@ -1545,57 +1548,57 @@ public:
 
     static NativePluginHandle _instantiateRack(const NativeHostDescriptor* host)
     {
-        return new CarlaEngineNative(host, false, true);
+        return new CarlaEngineNative(host, false, true, true);
     }
 
     static NativePluginHandle _instantiateRackNoMidiOut(const NativeHostDescriptor* host)
     {
-        return new CarlaEngineNative(host, false, false);
+        return new CarlaEngineNative(host, false, true, false);
     }
 
     static NativePluginHandle _instantiatePatchbay(const NativeHostDescriptor* host)
     {
-        return new CarlaEngineNative(host, true, true);
+        return new CarlaEngineNative(host, true, true, true);
     }
 
     static NativePluginHandle _instantiatePatchbay3s(const NativeHostDescriptor* host)
     {
-        return new CarlaEngineNative(host, true, true, 3, 2);
+        return new CarlaEngineNative(host, true, true, true, 3, 2);
     }
 
     static NativePluginHandle _instantiatePatchbay16(const NativeHostDescriptor* host)
     {
-        return new CarlaEngineNative(host, true, true, 16, 16);
+        return new CarlaEngineNative(host, true, true, true, 16, 16);
     }
 
     static NativePluginHandle _instantiatePatchbay32(const NativeHostDescriptor* host)
     {
-        return new CarlaEngineNative(host, true, true, 32, 32);
+        return new CarlaEngineNative(host, true, true, true, 32, 32);
     }
 
     static NativePluginHandle _instantiatePatchbay64(const NativeHostDescriptor* host)
     {
-        return new CarlaEngineNative(host, true, true, 64, 64);
+        return new CarlaEngineNative(host, true, true, true, 64, 64);
     }
 
     static NativePluginHandle _instantiatePatchbayCV(const NativeHostDescriptor* host)
     {
-        return new CarlaEngineNative(host, true, true, 2, 2, 5, 5);
+        return new CarlaEngineNative(host, true, true, true, 2, 2, 5, 5);
     }
 
     static NativePluginHandle _instantiatePatchbayCV8(const NativeHostDescriptor* host)
     {
-        return new CarlaEngineNative(host, true, true, 2, 2, 8, 8);
+        return new CarlaEngineNative(host, true, true, true, 2, 2, 8, 8);
     }
 
     static NativePluginHandle _instantiatePatchbayCV32(const NativeHostDescriptor* host)
     {
-        return new CarlaEngineNative(host, true, true, 64, 64, 32, 32);
+        return new CarlaEngineNative(host, true, true, true, 64, 64, 32, 32);
     }
 
     static NativePluginHandle _instantiatePatchbayOBS(const NativeHostDescriptor* host)
     {
-        return new CarlaEngineNative(host, true, true, 8, 8);
+        return new CarlaEngineNative(host, true, false, false, 8, 8);
     }
 
     static void _cleanup(NativePluginHandle handle)
@@ -1752,6 +1755,7 @@ private:
 #endif
 
     const bool kIsPatchbay; // rack if false
+    const bool kHasMidiIn;
     const bool kHasMidiOut;
     bool fIsActive, fIsRunning, fUsesEmbed;
 #ifndef CARLA_ENGINE_WITHOUT_UI