MIDI message reassemby; we can play notes over rtpMIDI again!

src/mididevice.cpp

@@ -238,12 +238,8 @@ void CMIDIDevice::MIDIMessageHandler (const u8 *pMessage, size_t nLength, unsign
 
 	// Handle MiniDexed performance SysEx messages
 	if (pMessage[0] == MIDI_SYSTEM_EXCLUSIVE_BEGIN && pMessage[1] == 0x7D ) {
-		LOGNOTE("MiniDexed SysEx handler entered, nLength=%u", nLength);
-		// Update: Pass m_pSynthesizer to handle_performance_sysex for synth/GUI update
 		handle_performance_sysex(pMessage, this, m_pSynthesizer, nCable);
         return;
-    } else  {
-        LOGNOTE("MiniDexed SysEx handler NOT entered, nLength=%u", nLength);
     }
 
 	// Master Volume is set using a MIDI SysEx message as follows:

src/serialmididevice.cpp

@@ -85,6 +85,12 @@ void CSerialMIDIDevice::Process (void)
 			m_SysExLen = 0;
 		}
 		if (m_SysExActive) {
+			if ((uchData & 0x80) && uchData != 0xF0 && uchData != 0xF7) {
+				// Abort SysEx on new status byte (except 0xF0/0xF7)
+				m_SysExActive = false;
+				m_SysExLen = 0;
+				// Process this byte as normal MIDI below
+			} else {
 				if (m_SysExLen < MAX_MIDI_MESSAGE) {
 					m_SysExBuffer[m_SysExLen++] = uchData;
 				}
@@ -93,7 +99,8 @@ void CSerialMIDIDevice::Process (void)
 					m_SysExActive = false;
 					m_SysExLen = 0;
 				}
-			continue;
+				if (m_SysExActive) continue;
+			}
 		}
 
 		// System Real Time messages may appear anywhere in the byte stream, so handle them specially

src/udpmididevice.cpp

@@ -76,6 +76,35 @@ boolean CUDPMIDIDevice::Initialize (void)
 	return true;
 }
 
+void CUDPMIDIDevice::UdpMidiReassembly(uint8_t byte, unsigned cable) {
+    // System Real Time messages (single byte)
+    if (byte == 0xF8 || byte == 0xFA || byte == 0xFB || byte == 0xFC || byte == 0xFE || byte == 0xFF) {
+        MIDIMessageHandler(&byte, 1, cable);
+        return;
+    }
+    // Status byte
+    if ((byte & 0x80) == 0x80 && (byte & 0xF0) != 0xF0) {
+        m_udpMidiMsg[0] = byte;
+        m_udpMidiState = 1;
+        return;
+    }
+    // Data byte
+    if (m_udpMidiState > 0) {
+        m_udpMidiMsg[m_udpMidiState++] = byte;
+        if ((m_udpMidiMsg[0] & 0xE0) == 0xC0 || (m_udpMidiMsg[0] & 0xF0) == 0xD0) {
+            // Program Change or Channel Pressure (2 bytes)
+            if (m_udpMidiState == 2) {
+                MIDIMessageHandler(m_udpMidiMsg, 2, cable);
+                m_udpMidiState = 0;
+            }
+        } else if (m_udpMidiState == 3) {
+            // All other channel messages (3 bytes)
+            MIDIMessageHandler(m_udpMidiMsg, 3, cable);
+            m_udpMidiState = 0;
+        }
+    }
+}
+
 // Methods to handle MIDI events
 
 void CUDPMIDIDevice::OnAppleMIDIDataReceived(const u8* pData, size_t nSize)
@@ -87,6 +116,10 @@ void CUDPMIDIDevice::OnAppleMIDIDataReceived(const u8* pData, size_t nSize)
 			m_SysExLen = 0;
 		}
 		if (m_SysExActive) {
+			if ((byte & 0x80) && byte != 0xF0 && byte != 0xF7) {
+				m_SysExActive = false;
+				m_SysExLen = 0;
+			} else {
 				if (m_SysExLen < MAX_MIDI_MESSAGE) {
 					m_SysExBuffer[m_SysExLen++] = byte;
 				}
@@ -95,9 +128,10 @@ void CUDPMIDIDevice::OnAppleMIDIDataReceived(const u8* pData, size_t nSize)
 					m_SysExActive = false;
 					m_SysExLen = 0;
 				}
-			continue;
+				if (m_SysExActive) continue;
+			}
 		}
-		MIDIMessageHandler(&byte, 1, VIRTUALCABLE);
+		UdpMidiReassembly(byte, VIRTUALCABLE);
 	}
 }
 
@@ -120,6 +154,10 @@ void CUDPMIDIDevice::OnUDPMIDIDataReceived(const u8* pData, size_t nSize)
 			m_SysExLen = 0;
 		}
 		if (m_SysExActive) {
+			if ((byte & 0x80) && byte != 0xF0 && byte != 0xF7) {
+				m_SysExActive = false;
+				m_SysExLen = 0;
+			} else {
 				if (m_SysExLen < MAX_MIDI_MESSAGE) {
 					m_SysExBuffer[m_SysExLen++] = byte;
 				}
@@ -128,9 +166,10 @@ void CUDPMIDIDevice::OnUDPMIDIDataReceived(const u8* pData, size_t nSize)
 					m_SysExActive = false;
 					m_SysExLen = 0;
 				}
-			continue;
+				if (m_SysExActive) continue;
+			}
 		}
-		MIDIMessageHandler(&byte, 1, VIRTUALCABLE);
+		UdpMidiReassembly(byte, VIRTUALCABLE);
 	}
 }
 

src/udpmididevice.h

@@ -62,6 +62,10 @@ private:
 	uint8_t m_SysExBuffer[MAX_MIDI_MESSAGE];
 	size_t m_SysExLen = 0;
 	bool m_SysExActive = false;
+
+	void UdpMidiReassembly(uint8_t byte, unsigned cable);
+	uint8_t m_udpMidiMsg[4] = {0};
+	uint8_t m_udpMidiState = 0;
 };
 
 #endif