forked from chromium/chromium
-
Notifications
You must be signed in to change notification settings - Fork 0
/
midi_message_util.h
38 lines (28 loc) · 1.05 KB
/
midi_message_util.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
// Copyright 2013 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_MIDI_MESSAGE_UTIL_H_
#define MEDIA_MIDI_MIDI_MESSAGE_UTIL_H_
#include <stddef.h>
#include <stdint.h>
#include <deque>
#include <vector>
#include "media/midi/midi_export.h"
namespace media {
namespace midi {
// Returns the length of a MIDI message in bytes. Never returns 4 or greater.
// Returns 0 if |status_byte| is:
// - not a valid status byte, namely data byte.
// - MIDI System Exclusive message.
// - End of System Exclusive message.
// - Reserved System Common Message (0xf4, 0xf5)
MIDI_EXPORT size_t GetMidiMessageLength(uint8_t status_byte);
const uint8_t kSysExByte = 0xf0;
const uint8_t kEndOfSysExByte = 0xf7;
const uint8_t kSysMessageBitMask = 0xf0;
const uint8_t kSysMessageBitPattern = 0xf0;
const uint8_t kSysRTMessageBitMask = 0xf8;
const uint8_t kSysRTMessageBitPattern = 0xf8;
} // namespace midi
} // namespace media
#endif // MEDIA_MIDI_MIDI_MESSAGE_UTIL_H_