lengthOfMessageType function Null safety

int lengthOfMessageType(
  1. int type
)

Implementation

int lengthOfMessageType(int type) {
  int midiType = type & 0xF0;

  switch (type) {
    case 0xF6:
    case 0xF8:
    case 0xFA:
    case 0xFB:
    case 0xFC:
    case 0xFF:
    case 0xFE:
      return 1;
    case 0xF1:
    case 0xF3:
      return 2;
    default:
      break;
  }

  switch (midiType) {
    case 0xC0:
    case 0xD0:
      return 2;
    case 0xF2:
    case 0x80:
    case 0x90:
    case 0xA0:
    case 0xB0:
    case 0xE0:
      return 3;
    case 0xF0:
      return -1;
    default:
      break;
  }
  return 0;
}