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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef MEDIA_MIDI_MIDI_MESSAGE_UTIL_H_
      6 #define MEDIA_MIDI_MIDI_MESSAGE_UTIL_H_
      7 
      8 #include <deque>
      9 #include <vector>
     10 
     11 #include "base/basictypes.h"
     12 #include "media/base/media_export.h"
     13 
     14 namespace media {
     15 
     16 // Returns the length of a MIDI message in bytes. Never returns 4 or greater.
     17 // Returns 0 if |status_byte| is:
     18 // - not a valid status byte, namely data byte.
     19 // - the MIDI System Exclusive message.
     20 // - the End of System Exclusive message.
     21 MEDIA_EXPORT size_t GetMidiMessageLength(uint8 status_byte);
     22 
     23 const uint8 kSysExByte = 0xf0;
     24 const uint8 kEndOfSysExByte = 0xf7;
     25 
     26 const uint8 kSysMessageBitMask = 0xf0;
     27 const uint8 kSysMessageBitPattern = 0xf0;
     28 const uint8 kSysRTMessageBitMask = 0xf8;
     29 const uint8 kSysRTMessageBitPattern = 0xf8;
     30 
     31 }  // namespace media
     32 
     33 #endif  // MEDIA_MIDI_MIDI_MESSAGE_UTIL_H_
     34