text: # This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild
  
  from pkg_resources import parse_version
  import kaitaistruct
  from kaitaistruct import KaitaiStruct, KaitaiStream, BytesIO
  from enum import Enum
  
  
  if parse_version(kaitaistruct.__version__) < parse_version('0.9'):
      raise Exception("Incompatible Kaitai Struct Python API: 0.9 or later is required, but you have %s" % (kaitaistruct.__version__))
  
  import vlq_base128_be
  class StandardMidiFile(KaitaiStruct):
      """Standard MIDI file, typically known just as "MID", is a standard way
      to serialize series of MIDI events, which is a protocol used in many
      music synthesizers to transfer music data: notes being played,
      effects being applied, etc.
      
      Internally, file consists of a header and series of tracks, every
      track listing MIDI events with certain header designating time these
      events are happening.
      
      NOTE: Rarely, MIDI files employ certain stateful compression scheme
      to avoid storing certain elements of further elements, instead
      reusing them from events which happened earlier in the
      stream. Kaitai Struct (as of v0.9) is currently unable to parse
      these, but files employing this mechanism are relatively rare.
      """
      def __init__(self, _io, _parent=None, _root=None):
          self._io = _io
          self._parent = _parent
          self._root = _root if _root else self
          self._read()
  
      def _read(self):
          self.hdr = StandardMidiFile.Header(self._io, self, self._root)
          self.tracks = [None] * (self.hdr.num_tracks)
          for i in range(self.hdr.num_tracks):
              self.tracks[i] = StandardMidiFile.Track(self._io, self, self._root)
  
  
      class TrackEvents(KaitaiStruct):
          def __init__(self, _io, _parent=None, _root=None):
              self._io = _io
              self._parent = _parent
              self._root = _root if _root else self
              self._read()
  
          def _read(self):
              self.event = []
              i = 0
              while not self._io.is_eof():
                  self.event.append(StandardMidiFile.TrackEvent(self._io, self, self._root))
                  i += 1
  
  
  
      class TrackEvent(KaitaiStruct):
          def __init__(self, _io, _parent=None, _root=None):
              self._io = _io
              self._parent = _parent
              self._root = _root if _root else self
              self._read()
  
          def _read(self):
              self.v_time = vlq_base128_be.VlqBase128Be(self._io)
              self.event_header = self._io.read_u1()
              if self.event_header == 255:
                  self.meta_event_body = StandardMidiFile.MetaEventBody(self._io, self, self._root)
  
              if self.event_header == 240:
                  self.sysex_body = StandardMidiFile.SysexEventBody(self._io, self, self._root)
  
              _on = self.event_type
              if _on == 224:
                  self.event_body = StandardMidiFile.PitchBendEvent(self._io, self, self._root)
              elif _on == 144:
                  self.event_body = StandardMidiFile.NoteOnEvent(self._io, self, self._root)
              elif _on == 208:
                  self.event_body = StandardMidiFile.ChannelPressureEvent(self._io, self, self._root)
              elif _on == 192:
                  self.event_body = StandardMidiFile.ProgramChangeEvent(self._io, self, self._root)
              elif _on == 160:
                  self.event_body = StandardMidiFile.PolyphonicPressureEvent(self._io, self, self._root)
              elif _on == 176:
                  self.event_body = StandardMidiFile.ControllerEvent(self._io, self, self._root)
              elif _on == 128:
                  self.event_body = StandardMidiFile.NoteOffEvent(self._io, self, self._root)
  
          @property
          def event_type(self):
              if hasattr(self, '_m_event_type'):
                  return self._m_event_type if hasattr(self, '_m_event_type') else None
  
              self._m_event_type = (self.event_header & 240)
              return self._m_event_type if hasattr(self, '_m_event_type') else None
  
          @property
          def channel(self):
              if hasattr(self, '_m_channel'):
                  return self._m_channel if hasattr(self, '_m_channel') else None
  
              if self.event_type != 240:
                  self._m_channel = (self.event_header & 15)
  
              return self._m_channel if hasattr(self, '_m_channel') else None
  
  
      class PitchBendEvent(KaitaiStruct):
          def __init__(self, _io, _parent=None, _root=None):
              self._io = _io
              self._parent = _parent
              self._root = _root if _root else self
              self._read()
  
          def _read(self):
              self.b1 = self._io.read_u1()
              self.b2 = self._io.read_u1()
  
          @property
          def bend_value(self):
              if hasattr(self, '_m_bend_value'):
                  return self._m_bend_value if hasattr(self, '_m_bend_value') else None
  
              self._m_bend_value = (((self.b2 << 7) + self.b1) - 16384)
              return self._m_bend_value if hasattr(self, '_m_bend_value') else None
  
          @property
          def adj_bend_value(self):
              if hasattr(self, '_m_adj_bend_value'):
                  return self._m_adj_bend_value if hasattr(self, '_m_adj_bend_value') else None
  
              self._m_adj_bend_value = (self.bend_value - 16384)
              return self._m_adj_bend_value if hasattr(self, '_m_adj_bend_value') else None
  
  
      class ProgramChangeEvent(KaitaiStruct):
          def __init__(self, _io, _parent=None, _root=None):
              self._io = _io
              self._parent = _parent
              self._root = _root if _root else self
              self._read()
  
          def _read(self):
              self.program = self._io.read_u1()
  
  
      class NoteOnEvent(KaitaiStruct):
          def __init__(self, _io, _parent=None, _root=None):
              self._io = _io
              self._parent = _parent
              self._root = _root if _root else self
              self._read()
  
          def _read(self):
              self.note = self._io.read_u1()
              self.velocity = self._io.read_u1()
  
  
      class PolyphonicPressureEvent(KaitaiStruct):
          def __init__(self, _io, _parent=None, _root=None):
              self._io = _io
              self._parent = _parent
              self._root = _root if _root else self
              self._read()
  
          def _read(self):
              self.note = self._io.read_u1()
              self.pressure = self._io.read_u1()
  
  
      class Track(KaitaiStruct):
          def __init__(self, _io, _parent=None, _root=None):
              self._io = _io
              self._parent = _parent
              self._root = _root if _root else self
              self._read()
  
          def _read(self):
              self.magic = self._io.read_bytes(4)
              if not self.magic == b"\x4D\x54\x72\x6B":
                  raise kaitaistruct.ValidationNotEqualError(b"\x4D\x54\x72\x6B", self.magic, self._io, u"/types/track/seq/0")
              self.len_events = self._io.read_u4be()
              self._raw_events = self._io.read_bytes(self.len_events)
              _io__raw_events = KaitaiStream(BytesIO(self._raw_events))
              self.events = StandardMidiFile.TrackEvents(_io__raw_events, self, self._root)
  
  
      class MetaEventBody(KaitaiStruct):
  
          class MetaTypeEnum(Enum):
              sequence_number = 0
              text_event = 1
              copyright = 2
              sequence_track_name = 3
              instrument_name = 4
              lyric_text = 5
              marker_text = 6
              cue_point = 7
              midi_channel_prefix_assignment = 32
              end_of_track = 47
              tempo = 81
              smpte_offset = 84
              time_signature = 88
              key_signature = 89
              sequencer_specific_event = 127
          def __init__(self, _io, _parent=None, _root=None):
              self._io = _io
              self._parent = _parent
              self._root = _root if _root else self
              self._read()
  
          def _read(self):
              self.meta_type = KaitaiStream.resolve_enum(StandardMidiFile.MetaEventBody.MetaTypeEnum, self._io.read_u1())
              self.len = vlq_base128_be.VlqBase128Be(self._io)
              self.body = self._io.read_bytes(self.len.value)
  
  
      class ControllerEvent(KaitaiStruct):
          def __init__(self, _io, _parent=None, _root=None):
              self._io = _io
              self._parent = _parent
              self._root = _root if _root else self
              self._read()
  
          def _read(self):
              self.controller = self._io.read_u1()
              self.value = self._io.read_u1()
  
  
      class Header(KaitaiStruct):
          def __init__(self, _io, _parent=None, _root=None):
              self._io = _io
              self._parent = _parent
              self._root = _root if _root else self
              self._read()
  
          def _read(self):
              self.magic = self._io.read_bytes(4)
              if not self.magic == b"\x4D\x54\x68\x64":
                  raise kaitaistruct.ValidationNotEqualError(b"\x4D\x54\x68\x64", self.magic, self._io, u"/types/header/seq/0")
              self.len_header = self._io.read_u4be()
              self.format = self._io.read_u2be()
              self.num_tracks = self._io.read_u2be()
              self.division = self._io.read_s2be()
  
  
      class SysexEventBody(KaitaiStruct):
          def __init__(self, _io, _parent=None, _root=None):
              self._io = _io
              self._parent = _parent
              self._root = _root if _root else self
              self._read()
  
          def _read(self):
              self.len = vlq_base128_be.VlqBase128Be(self._io)
              self.data = self._io.read_bytes(self.len.value)
  
  
      class NoteOffEvent(KaitaiStruct):
          def __init__(self, _io, _parent=None, _root=None):
              self._io = _io
              self._parent = _parent
              self._root = _root if _root else self
              self._read()
  
          def _read(self):
              self.note = self._io.read_u1()
              self.velocity = self._io.read_u1()
  
  
      class ChannelPressureEvent(KaitaiStruct):
          def __init__(self, _io, _parent=None, _root=None):
              self._io = _io
              self._parent = _parent
              self._root = _root if _root else self
              self._read()
  
          def _read(self):
              self.pressure = self._io.read_u1()
  
  
  
  