diff options
| author | Xusheng <xusheng@vector35.com> | 2021-07-01 12:34:30 +0800 |
|---|---|---|
| committer | Xusheng Li <xushengli@protonmail.com> | 2021-07-05 10:11:47 +0800 |
| commit | 13ff200ba134b8704f37eca99c42b70dab0d17dc (patch) | |
| tree | 876b3db3c53f704b31152aeaede1f2edc9d27b24 /python/examples/kaitai/standard_midi_file.py | |
| parent | 4039a800349dcd587833d3e27d9137e4649818f4 (diff) | |
Remove snippet and kaitai plugin. Note their individual links.
Diffstat (limited to 'python/examples/kaitai/standard_midi_file.py')
| -rw-r--r-- | python/examples/kaitai/standard_midi_file.py | 385 |
1 files changed, 0 insertions, 385 deletions
diff --git a/python/examples/kaitai/standard_midi_file.py b/python/examples/kaitai/standard_midi_file.py deleted file mode 100644 index f4723352..00000000 --- a/python/examples/kaitai/standard_midi_file.py +++ /dev/null @@ -1,385 +0,0 @@ -# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild - -from pkg_resources import parse_version -from .kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO -import collections -from enum import Enum - - -if parse_version(ks_version) < parse_version('0.7'): - raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version)) - -from .vlq_base128_be import VlqBase128Be -class StandardMidiFile(KaitaiStruct): - """Standard MIDI file, typically knows 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. - """ - SEQ_FIELDS = ["hdr", "tracks"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['hdr']['start'] = self._io.pos() - self.hdr = self._root.Header(self._io, self, self._root) - self.hdr._read() - self._debug['hdr']['end'] = self._io.pos() - self._debug['tracks']['start'] = self._io.pos() - self.tracks = [None] * (self.hdr.num_tracks) - for i in range(self.hdr.num_tracks): - if not 'arr' in self._debug['tracks']: - self._debug['tracks']['arr'] = [] - self._debug['tracks']['arr'].append({'start': self._io.pos()}) - _t_tracks = self._root.Track(self._io, self, self._root) - _t_tracks._read() - self.tracks[i] = _t_tracks - self._debug['tracks']['arr'][i]['end'] = self._io.pos() - - self._debug['tracks']['end'] = self._io.pos() - - class TrackEvents(KaitaiStruct): - SEQ_FIELDS = ["event"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['event']['start'] = self._io.pos() - self.event = [] - i = 0 - while not self._io.is_eof(): - if not 'arr' in self._debug['event']: - self._debug['event']['arr'] = [] - self._debug['event']['arr'].append({'start': self._io.pos()}) - _t_event = self._root.TrackEvent(self._io, self, self._root) - _t_event._read() - self.event.append(_t_event) - self._debug['event']['arr'][len(self.event) - 1]['end'] = self._io.pos() - i += 1 - - self._debug['event']['end'] = self._io.pos() - - - class TrackEvent(KaitaiStruct): - SEQ_FIELDS = ["v_time", "event_header", "meta_event_body", "sysex_body", "event_body"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['v_time']['start'] = self._io.pos() - self.v_time = VlqBase128Be(self._io) - self.v_time._read() - self._debug['v_time']['end'] = self._io.pos() - self._debug['event_header']['start'] = self._io.pos() - self.event_header = self._io.read_u1() - self._debug['event_header']['end'] = self._io.pos() - if self.event_header == 255: - self._debug['meta_event_body']['start'] = self._io.pos() - self.meta_event_body = self._root.MetaEventBody(self._io, self, self._root) - self.meta_event_body._read() - self._debug['meta_event_body']['end'] = self._io.pos() - - if self.event_header == 240: - self._debug['sysex_body']['start'] = self._io.pos() - self.sysex_body = self._root.SysexEventBody(self._io, self, self._root) - self.sysex_body._read() - self._debug['sysex_body']['end'] = self._io.pos() - - self._debug['event_body']['start'] = self._io.pos() - _on = self.event_type - if _on == 224: - self.event_body = self._root.PitchBendEvent(self._io, self, self._root) - self.event_body._read() - elif _on == 144: - self.event_body = self._root.NoteOnEvent(self._io, self, self._root) - self.event_body._read() - elif _on == 208: - self.event_body = self._root.ChannelPressureEvent(self._io, self, self._root) - self.event_body._read() - elif _on == 192: - self.event_body = self._root.ProgramChangeEvent(self._io, self, self._root) - self.event_body._read() - elif _on == 160: - self.event_body = self._root.PolyphonicPressureEvent(self._io, self, self._root) - self.event_body._read() - elif _on == 176: - self.event_body = self._root.ControllerEvent(self._io, self, self._root) - self.event_body._read() - elif _on == 128: - self.event_body = self._root.NoteOffEvent(self._io, self, self._root) - self.event_body._read() - self._debug['event_body']['end'] = self._io.pos() - - @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): - SEQ_FIELDS = ["b1", "b2"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['b1']['start'] = self._io.pos() - self.b1 = self._io.read_u1() - self._debug['b1']['end'] = self._io.pos() - self._debug['b2']['start'] = self._io.pos() - self.b2 = self._io.read_u1() - self._debug['b2']['end'] = self._io.pos() - - @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): - SEQ_FIELDS = ["program"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['program']['start'] = self._io.pos() - self.program = self._io.read_u1() - self._debug['program']['end'] = self._io.pos() - - - class NoteOnEvent(KaitaiStruct): - SEQ_FIELDS = ["note", "velocity"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['note']['start'] = self._io.pos() - self.note = self._io.read_u1() - self._debug['note']['end'] = self._io.pos() - self._debug['velocity']['start'] = self._io.pos() - self.velocity = self._io.read_u1() - self._debug['velocity']['end'] = self._io.pos() - - - class PolyphonicPressureEvent(KaitaiStruct): - SEQ_FIELDS = ["note", "pressure"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['note']['start'] = self._io.pos() - self.note = self._io.read_u1() - self._debug['note']['end'] = self._io.pos() - self._debug['pressure']['start'] = self._io.pos() - self.pressure = self._io.read_u1() - self._debug['pressure']['end'] = self._io.pos() - - - class Track(KaitaiStruct): - SEQ_FIELDS = ["magic", "len_events", "events"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['magic']['start'] = self._io.pos() - self.magic = self._io.ensure_fixed_contents(b"\x4D\x54\x72\x6B") - self._debug['magic']['end'] = self._io.pos() - self._debug['len_events']['start'] = self._io.pos() - self.len_events = self._io.read_u4be() - self._debug['len_events']['end'] = self._io.pos() - self._debug['events']['start'] = self._io.pos() - self._raw_events = self._io.read_bytes(self.len_events) - io = KaitaiStream(BytesIO(self._raw_events)) - self.events = self._root.TrackEvents(io, self, self._root) - self.events._read() - self._debug['events']['end'] = self._io.pos() - - - 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 - SEQ_FIELDS = ["meta_type", "len", "body"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['meta_type']['start'] = self._io.pos() - self.meta_type = KaitaiStream.resolve_enum(self._root.MetaEventBody.MetaTypeEnum, self._io.read_u1()) - self._debug['meta_type']['end'] = self._io.pos() - self._debug['len']['start'] = self._io.pos() - self.len = VlqBase128Be(self._io) - self.len._read() - self._debug['len']['end'] = self._io.pos() - self._debug['body']['start'] = self._io.pos() - self.body = self._io.read_bytes(self.len.value) - self._debug['body']['end'] = self._io.pos() - - - class ControllerEvent(KaitaiStruct): - SEQ_FIELDS = ["controller", "value"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['controller']['start'] = self._io.pos() - self.controller = self._io.read_u1() - self._debug['controller']['end'] = self._io.pos() - self._debug['value']['start'] = self._io.pos() - self.value = self._io.read_u1() - self._debug['value']['end'] = self._io.pos() - - - class Header(KaitaiStruct): - SEQ_FIELDS = ["magic", "len_header", "format", "num_tracks", "division"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['magic']['start'] = self._io.pos() - self.magic = self._io.ensure_fixed_contents(b"\x4D\x54\x68\x64") - self._debug['magic']['end'] = self._io.pos() - self._debug['len_header']['start'] = self._io.pos() - self.len_header = self._io.read_u4be() - self._debug['len_header']['end'] = self._io.pos() - self._debug['format']['start'] = self._io.pos() - self.format = self._io.read_u2be() - self._debug['format']['end'] = self._io.pos() - self._debug['num_tracks']['start'] = self._io.pos() - self.num_tracks = self._io.read_u2be() - self._debug['num_tracks']['end'] = self._io.pos() - self._debug['division']['start'] = self._io.pos() - self.division = self._io.read_s2be() - self._debug['division']['end'] = self._io.pos() - - - class SysexEventBody(KaitaiStruct): - SEQ_FIELDS = ["len", "data"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['len']['start'] = self._io.pos() - self.len = VlqBase128Be(self._io) - self.len._read() - self._debug['len']['end'] = self._io.pos() - self._debug['data']['start'] = self._io.pos() - self.data = self._io.read_bytes(self.len.value) - self._debug['data']['end'] = self._io.pos() - - - class NoteOffEvent(KaitaiStruct): - SEQ_FIELDS = ["note", "velocity"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['note']['start'] = self._io.pos() - self.note = self._io.read_u1() - self._debug['note']['end'] = self._io.pos() - self._debug['velocity']['start'] = self._io.pos() - self.velocity = self._io.read_u1() - self._debug['velocity']['end'] = self._io.pos() - - - class ChannelPressureEvent(KaitaiStruct): - SEQ_FIELDS = ["pressure"] - def __init__(self, _io, _parent=None, _root=None): - self._io = _io - self._parent = _parent - self._root = _root if _root else self - self._debug = collections.defaultdict(dict) - - def _read(self): - self._debug['pressure']['start'] = self._io.pos() - self.pressure = self._io.read_u1() - self._debug['pressure']['end'] = self._io.pos() - - - |
