zircon/system/fidl/fuchsia-hardware-midi/midi.fidl

// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

library fuchsia.hardware.midi;

using zx;

/// Describes what type of MIDI device an implementation of Device represents
enum Direction : uint8 {
    /// A MIDI source
    SOURCE = 1;
    /// A MIDI sink
    SINK = 2;
};

protocol Device {
    /// Get direction of the MIDI device
    GetDirection() -> (Direction direction);

    /// Reads MIDI data from a MIDI source
    Read(uint64 count) -> (bytes data) error zx.status;
	
    /// Reads MIDI data to a MIDI sink
    Write(bytes data) -> (uint64 actual) error zx.status;
};