media/midi/midi_message_util.cc

   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 #include "media/midi/midi_message_util.h"
   6
   7 namespace media {
   8
   9 size_t GetMidiMessageLength(uint8 status_byte) {
  10   if (status_byte < 0x80)
  11     return 0;
  12   if (0x80 <= status_byte && status_byte <= 0xbf)
  13     return 3;
  14   if (0xc0 <= status_byte && status_byte <= 0xdf)
  15     return 2;
  16   if (0xe0 <= status_byte && status_byte <= 0xef)
  17     return 3;
  18   if (status_byte == 0xf0)
  19     return 0;
  20   if (status_byte == 0xf1)
  21     return 2;
  22   if (status_byte == 0xf2)
  23     return 3;
  24   if (status_byte == 0xf3)
  25     return 2;
  26   if (0xf4 <= status_byte && status_byte <= 0xf6)
  27     return 1;
  28   if (status_byte == 0xf7)
  29     return 0;
  30   // 0xf8 <= status_byte && status_byte <= 0xff
  31   return 1;
  32 }
  33
  34 }  // namespace media