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-rw-r--r--src/osd/interface/midiport.h40
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diff --git a/src/osd/interface/midiport.h b/src/osd/interface/midiport.h
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+// license:BSD-3-Clause
+// copyright-holders:Vas Crabb
+/***************************************************************************
+
+ midiport.h
+
+ OSD interface to midi ports
+
+***************************************************************************/
+#ifndef MAME_OSD_INTERFACE_MIDIPORT_H
+#define MAME_OSD_INTERFACE_MIDIPORT_H
+
+#pragma once
+
+#include <cstdint>
+
+
+namespace osd {
+
+class midi_input_port
+{
+public:
+ virtual ~midi_input_port() = default;
+
+ virtual bool poll() = 0;
+ virtual int read(uint8_t *pOut) = 0;
+};
+
+
+class midi_output_port
+{
+public:
+ virtual ~midi_output_port() = default;
+
+ virtual void write(uint8_t data) = 0;
+};
+
+} // namespace osd
+
+#endif // MAME_OSD_INTERFACE_MIDIPORT_H