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dlog.py
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# 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
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))
class Dlog(KaitaiStruct):
class DlogFormats(Enum):
openscope = 1
openlogger = 3
class StopReasons(Enum):
normal = 0
forced = 1
error = 2
overflow = 3
unknown = 4
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.endianness = self._io.read_u1()
self.body = self._root.Body(self._io, self, self._root)
class Body(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):
_on = self._root.endianness
if _on == 0:
self._is_le = True
elif _on == 1:
self._is_le = False
if self._is_le == True:
self._read_le()
elif self._is_le == False:
self._read_be()
else:
raise Exception("Unable to decide endianness")
def _read_le(self):
self.header = self._root.Body.Header(self._io, self, self._root, self._is_le)
def _read_be(self):
self.header = self._root.Body.Header(self._io, self, self._root, self._is_le)
class Header(KaitaiStruct):
def __init__(self, _io, _parent=None, _root=None, _is_le=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self._is_le = _is_le
self._read()
def _read(self):
if self._is_le == True:
self._read_le()
elif self._is_le == False:
self._read_be()
else:
raise Exception("Unable to decide endianness")
def _read_le(self):
self.sample_size = self._io.read_u1()
self.header_size = self._io.read_u2le()
self.start_of_data = self._io.read_u2le()
self.dlog_format = KaitaiStream.resolve_enum(self._root.DlogFormats, self._io.read_u2le())
self.dlog_version = self._io.read_u4le()
self.voltage_scale = self._io.read_u8le()
self.stop_reason = KaitaiStream.resolve_enum(self._root.StopReasons, self._io.read_u4le())
self.sample_initial_index = self._io.read_u8le()
self.num_samples = self._io.read_u8le()
self.sample_rate_scale = self._io.read_u8le()
self.raw_sample_rate = self._io.read_u8le()
self.delay_scale = self._io.read_u8le()
self.raw_delay = self._io.read_s8le()
if self.dlog_format == self._root.DlogFormats.openlogger:
self.num_openlogger_channels = self._io.read_u4le()
if self.dlog_format == self._root.DlogFormats.openlogger:
self.openlogger_channel_map = [None] * (8)
for i in range(8):
self.openlogger_channel_map[i] = self._io.read_u1()
def _read_be(self):
self.sample_size = self._io.read_u1()
self.header_size = self._io.read_u2be()
self.start_of_data = self._io.read_u2be()
self.dlog_format = KaitaiStream.resolve_enum(self._root.DlogFormats, self._io.read_u2be())
self.dlog_version = self._io.read_u4be()
self.voltage_scale = self._io.read_u8be()
self.stop_reason = KaitaiStream.resolve_enum(self._root.StopReasons, self._io.read_u4be())
self.sample_initial_index = self._io.read_u8be()
self.num_samples = self._io.read_u8be()
self.sample_rate_scale = self._io.read_u8be()
self.raw_sample_rate = self._io.read_u8be()
self.delay_scale = self._io.read_u8be()
self.raw_delay = self._io.read_s8be()
if self.dlog_format == self._root.DlogFormats.openlogger:
self.num_openlogger_channels = self._io.read_u4be()
if self.dlog_format == self._root.DlogFormats.openlogger:
self.openlogger_channel_map = [None] * (8)
for i in range(8):
self.openlogger_channel_map[i] = self._io.read_u1()
@property
def sample_rate(self):
if hasattr(self, '_m_sample_rate'):
return self._m_sample_rate if hasattr(self, '_m_sample_rate') else None
self._m_sample_rate = ((1.0 * self.raw_sample_rate) / self.sample_rate_scale)
return self._m_sample_rate if hasattr(self, '_m_sample_rate') else None
@property
def delay(self):
if hasattr(self, '_m_delay'):
return self._m_delay if hasattr(self, '_m_delay') else None
self._m_delay = ((1.0 * self.raw_delay) / self.delay_scale)
return self._m_delay if hasattr(self, '_m_delay') else None
@property
def num_channels(self):
if hasattr(self, '_m_num_channels'):
return self._m_num_channels if hasattr(self, '_m_num_channels') else None
self._m_num_channels = (self.num_openlogger_channels if self.dlog_format == self._root.DlogFormats.openlogger else 1)
return self._m_num_channels if hasattr(self, '_m_num_channels') else None
@property
def channel_map(self):
if hasattr(self, '_m_channel_map'):
return self._m_channel_map if hasattr(self, '_m_channel_map') else None
self._m_channel_map = (self.openlogger_channel_map if self.dlog_format == self._root.DlogFormats.openlogger else [0])
return self._m_channel_map if hasattr(self, '_m_channel_map') else None
class Data(KaitaiStruct):
def __init__(self, _io, _parent=None, _root=None, _is_le=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self._is_le = _is_le
self._read()
def _read(self):
if self._is_le == True:
self._read_le()
elif self._is_le == False:
self._read_be()
else:
raise Exception("Unable to decide endianness")
def _read_le(self):
self.samples = []
i = 0
while not self._io.is_eof():
self.samples.append(self._root.Body.Data.Sample(self._io, self, self._root, self._is_le))
i += 1
def _read_be(self):
self.samples = []
i = 0
while not self._io.is_eof():
self.samples.append(self._root.Body.Data.Sample(self._io, self, self._root, self._is_le))
i += 1
class Sample(KaitaiStruct):
def __init__(self, _io, _parent=None, _root=None, _is_le=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self._is_le = _is_le
self._read()
def _read(self):
if self._is_le == True:
self._read_le()
elif self._is_le == False:
self._read_be()
else:
raise Exception("Unable to decide endianness")
def _read_le(self):
self.channel = [None] * (self._root.body.header.num_channels)
for i in range(self._root.body.header.num_channels):
_on = self._root.body.header.sample_size
if _on == 1:
self.channel[i] = self._io.read_s1()
elif _on == 2:
self.channel[i] = self._io.read_s2le()
elif _on == 4:
self.channel[i] = self._io.read_s4le()
def _read_be(self):
self.channel = [None] * (self._root.body.header.num_channels)
for i in range(self._root.body.header.num_channels):
_on = self._root.body.header.sample_size
if _on == 1:
self.channel[i] = self._io.read_s1()
elif _on == 2:
self.channel[i] = self._io.read_s2be()
elif _on == 4:
self.channel[i] = self._io.read_s4be()
@property
def data(self):
if hasattr(self, '_m_data'):
return self._m_data if hasattr(self, '_m_data') else None
_pos = self._io.pos()
self._io.seek(self.header.start_of_data)
if self._is_le:
self._m_data = self._root.Body.Data(self._io, self, self._root, self._is_le)
else:
self._m_data = self._root.Body.Data(self._io, self, self._root, self._is_le)
self._io.seek(_pos)
return self._m_data if hasattr(self, '_m_data') else None