Fix MIDI out on plugin bridges, due to previous optimization

source/backend/engine/CarlaEngineBridge.cpp

@@ -1256,6 +1256,10 @@ protected:
                             }
                         }
 
+                        if (curMidiDataPos != 0 &&
+                            curMidiDataPos + kBridgeBaseMidiOutHeaderSize < kBridgeRtClientDataMidiOutSize)
+                            carla_zeroBytes(midiData, kBridgeBaseMidiOutHeaderSize);
+
                         carla_zeroStructs(pData->events.out, kMaxEngineEventInternalCount);
                     }
 

source/backend/plugin/CarlaPluginBridge.cpp

@@ -1284,7 +1284,7 @@ public:
             uint8_t port, size;
             const uint8_t* midiData(fShmRtClientControl.data->midiOut);
 
-            for (std::size_t read=0; read<kBridgeRtClientDataMidiOutSize;)
+            for (std::size_t read=0; read<kBridgeRtClientDataMidiOutSize-kBridgeBaseMidiOutHeaderSize;)
             {
                 // get time
                 time = *(const uint32_t*)midiData;
@@ -1305,7 +1305,7 @@ public:
 
                 pData->event.portOut->writeMidiEvent(time, size, data);
 
-                read += 6U /* time, port and size */ + size;
+                read += kBridgeBaseMidiOutHeaderSize + size;
             }
 
         } // End of Control and MIDI Output

source/backend/plugin/CarlaPluginJack.cpp

@@ -847,7 +847,7 @@ public:
             uint8_t port, size;
             const uint8_t* midiData(fShmRtClientControl.data->midiOut);
 
-            for (std::size_t read=0; read<kBridgeRtClientDataMidiOutSize;)
+            for (std::size_t read=0; read<kBridgeRtClientDataMidiOutSize-kBridgeBaseMidiOutHeaderSize;)
             {
                 // get time
                 time = *(const uint32_t*)midiData;
@@ -868,7 +868,7 @@ public:
 
                 pData->event.portOut->writeMidiEvent(time, size, data);
 
-                read += 6U /* time, port and size */ + size;
+                read += kBridgeBaseMidiOutHeaderSize + size;
             }
 
         } // End of Control and MIDI Output

source/libjack/libjack.cpp

@@ -805,6 +805,11 @@ bool CarlaJackAppClient::handleRtData()
                             curMidiDataPos += kBridgeBaseMidiOutHeaderSize + jmevent.size;
                         }
                     }
+
+                    if (curMidiDataPos != 0 &&
+                        curMidiDataPos + kBridgeBaseMidiOutHeaderSize < kBridgeRtClientDataMidiOutSize)
+                        carla_zeroBytes(midiData, kBridgeBaseMidiOutHeaderSize);
+
                 }
             }
             else