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