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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_MIDI_USB_MIDI_JACK_H_
#define MEDIA_MIDI_USB_MIDI_JACK_H_
#include <stdint.h>
#include "media/midi/usb_midi_export.h"
namespace media {
namespace midi {
class UsbMidiDevice;
// UsbMidiJack represents an EMBEDDED MIDI jack.
struct USB_MIDI_EXPORT UsbMidiJack {
// The direction of the endpoint associated with an EMBEDDED MIDI jack.
// Note that an IN MIDI jack associated with an OUT endpoint has
// ***DIRECTION_OUT*** direction.
enum Direction {
DIRECTION_IN,
DIRECTION_OUT,
};
UsbMidiJack(UsbMidiDevice* device,
uint8_t jack_id,
uint8_t cable_number,
uint8_t endpoint_address)
: device(device),
jack_id(jack_id),
cable_number(cable_number),
endpoint_address(endpoint_address) {}
// Not owned
UsbMidiDevice* device;
// The id of this jack unique in the interface.
uint8_t jack_id;
// The cable number of this jack in the associated endpoint.
uint8_t cable_number;
// The address of the endpoint that this jack is associated with.
uint8_t endpoint_address;
Direction direction() const {
return (endpoint_address & 0x80) ? DIRECTION_IN : DIRECTION_OUT;
}
uint8_t endpoint_number() const { return (endpoint_address & 0xf); }
};
} // namespace midi
} // namespace media
#endif // MEDIA_MIDI_USB_MIDI_JACK_H_
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