1 files changed, 15 insertions, 1 deletions
diff --git a/libs/ardour/ardour/midi_ring_buffer.h b/libs/ardour/ardour/midi_ring_buffer.h
index 567f375bc3..14934456e1 100644
--- a/libs/ardour/ardour/midi_ring_buffer.h
+++ b/libs/ardour/ardour/midi_ring_buffer.h
@@ -21,9 +21,12 @@
 
 #include <iostream>
 #include <algorithm>
+
+#include "evoral/EventRingBuffer.hpp"
+
 #include "ardour/types.h"
 #include "ardour/buffer.h"
-#include "evoral/EventRingBuffer.hpp"
+#include "ardour/midi_state_tracker.h"
 
 namespace ARDOUR {
 
@@ -80,8 +83,19 @@ protected:
 		return (0x80 <= event_type_byte) && (event_type_byte <= 0xE0);
 	}
 
+	inline bool is_note_on(uint8_t event_type_byte) {
+		// mask out channel information
+		return (event_type_byte & 0xF0) == MIDI_CMD_NOTE_ON;
+	}
+
+	inline bool is_note_off(uint8_t event_type_byte) {
+		// mask out channel information
+		return (event_type_byte & 0xF0) == MIDI_CMD_NOTE_OFF;
+	}
+
 private:
 	volatile uint32_t _channel_mask; // 16 bits mode, 16 bits mask
+	MidiStateTracker _tracker;
 };