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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
import collections
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 .exif import Exif
class Jpeg(KaitaiStruct):
class ComponentId(Enum):
y = 1
cb = 2
cr = 3
i = 4
q = 5
SEQ_FIELDS = ["segments"]
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['segments']['start'] = self._io.pos()
self.segments = []
i = 0
while not self._io.is_eof():
if not 'arr' in self._debug['segments']:
self._debug['segments']['arr'] = []
self._debug['segments']['arr'].append({'start': self._io.pos()})
_t_segments = self._root.Segment(self._io, self, self._root)
_t_segments._read()
self.segments.append(_t_segments)
self._debug['segments']['arr'][len(self.segments) - 1]['end'] = self._io.pos()
i += 1
self._debug['segments']['end'] = self._io.pos()
class Segment(KaitaiStruct):
class MarkerEnum(Enum):
tem = 1
sof0 = 192
sof1 = 193
sof2 = 194
sof3 = 195
dht = 196
sof5 = 197
sof6 = 198
sof7 = 199
soi = 216
eoi = 217
sos = 218
dqt = 219
dnl = 220
dri = 221
dhp = 222
app0 = 224
app1 = 225
app2 = 226
app3 = 227
app4 = 228
app5 = 229
app6 = 230
app7 = 231
app8 = 232
app9 = 233
app10 = 234
app11 = 235
app12 = 236
app13 = 237
app14 = 238
app15 = 239
com = 254
SEQ_FIELDS = ["magic", "marker", "length", "data", "image_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['magic']['start'] = self._io.pos()
self.magic = self._io.ensure_fixed_contents(b"\xFF")
self._debug['magic']['end'] = self._io.pos()
self._debug['marker']['start'] = self._io.pos()
self.marker = KaitaiStream.resolve_enum(self._root.Segment.MarkerEnum, self._io.read_u1())
self._debug['marker']['end'] = self._io.pos()
if ((self.marker != self._root.Segment.MarkerEnum.soi) and (self.marker != self._root.Segment.MarkerEnum.eoi)) :
self._debug['length']['start'] = self._io.pos()
self.length = self._io.read_u2be()
self._debug['length']['end'] = self._io.pos()
if ((self.marker != self._root.Segment.MarkerEnum.soi) and (self.marker != self._root.Segment.MarkerEnum.eoi)) :
self._debug['data']['start'] = self._io.pos()
_on = self.marker
if _on == self._root.Segment.MarkerEnum.app1:
self._raw_data = self._io.read_bytes((self.length - 2))
io = KaitaiStream(BytesIO(self._raw_data))
self.data = self._root.SegmentApp1(io, self, self._root)
self.data._read()
elif _on == self._root.Segment.MarkerEnum.app0:
self._raw_data = self._io.read_bytes((self.length - 2))
io = KaitaiStream(BytesIO(self._raw_data))
self.data = self._root.SegmentApp0(io, self, self._root)
self.data._read()
elif _on == self._root.Segment.MarkerEnum.sof0:
self._raw_data = self._io.read_bytes((self.length - 2))
io = KaitaiStream(BytesIO(self._raw_data))
self.data = self._root.SegmentSof0(io, self, self._root)
self.data._read()
elif _on == self._root.Segment.MarkerEnum.sos:
self._raw_data = self._io.read_bytes((self.length - 2))
io = KaitaiStream(BytesIO(self._raw_data))
self.data = self._root.SegmentSos(io, self, self._root)
self.data._read()
else:
self.data = self._io.read_bytes((self.length - 2))
self._debug['data']['end'] = self._io.pos()
if self.marker == self._root.Segment.MarkerEnum.sos:
self._debug['image_data']['start'] = self._io.pos()
self.image_data = self._io.read_bytes_full()
self._debug['image_data']['end'] = self._io.pos()
class SegmentSos(KaitaiStruct):
SEQ_FIELDS = ["num_components", "components", "start_spectral_selection", "end_spectral", "appr_bit_pos"]
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['num_components']['start'] = self._io.pos()
self.num_components = self._io.read_u1()
self._debug['num_components']['end'] = self._io.pos()
self._debug['components']['start'] = self._io.pos()
self.components = [None] * (self.num_components)
for i in range(self.num_components):
if not 'arr' in self._debug['components']:
self._debug['components']['arr'] = []
self._debug['components']['arr'].append({'start': self._io.pos()})
_t_components = self._root.SegmentSos.Component(self._io, self, self._root)
_t_components._read()
self.components[i] = _t_components
self._debug['components']['arr'][i]['end'] = self._io.pos()
self._debug['components']['end'] = self._io.pos()
self._debug['start_spectral_selection']['start'] = self._io.pos()
self.start_spectral_selection = self._io.read_u1()
self._debug['start_spectral_selection']['end'] = self._io.pos()
self._debug['end_spectral']['start'] = self._io.pos()
self.end_spectral = self._io.read_u1()
self._debug['end_spectral']['end'] = self._io.pos()
self._debug['appr_bit_pos']['start'] = self._io.pos()
self.appr_bit_pos = self._io.read_u1()
self._debug['appr_bit_pos']['end'] = self._io.pos()
class Component(KaitaiStruct):
SEQ_FIELDS = ["id", "huffman_table"]
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['id']['start'] = self._io.pos()
self.id = KaitaiStream.resolve_enum(self._root.ComponentId, self._io.read_u1())
self._debug['id']['end'] = self._io.pos()
self._debug['huffman_table']['start'] = self._io.pos()
self.huffman_table = self._io.read_u1()
self._debug['huffman_table']['end'] = self._io.pos()
class SegmentApp1(KaitaiStruct):
SEQ_FIELDS = ["magic", "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['magic']['start'] = self._io.pos()
self.magic = (self._io.read_bytes_term(0, False, True, True)).decode(u"ASCII")
self._debug['magic']['end'] = self._io.pos()
self._debug['body']['start'] = self._io.pos()
_on = self.magic
if _on == u"Exif":
self.body = self._root.ExifInJpeg(self._io, self, self._root)
self.body._read()
self._debug['body']['end'] = self._io.pos()
class SegmentSof0(KaitaiStruct):
SEQ_FIELDS = ["bits_per_sample", "image_height", "image_width", "num_components", "components"]
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['bits_per_sample']['start'] = self._io.pos()
self.bits_per_sample = self._io.read_u1()
self._debug['bits_per_sample']['end'] = self._io.pos()
self._debug['image_height']['start'] = self._io.pos()
self.image_height = self._io.read_u2be()
self._debug['image_height']['end'] = self._io.pos()
self._debug['image_width']['start'] = self._io.pos()
self.image_width = self._io.read_u2be()
self._debug['image_width']['end'] = self._io.pos()
self._debug['num_components']['start'] = self._io.pos()
self.num_components = self._io.read_u1()
self._debug['num_components']['end'] = self._io.pos()
self._debug['components']['start'] = self._io.pos()
self.components = [None] * (self.num_components)
for i in range(self.num_components):
if not 'arr' in self._debug['components']:
self._debug['components']['arr'] = []
self._debug['components']['arr'].append({'start': self._io.pos()})
_t_components = self._root.SegmentSof0.Component(self._io, self, self._root)
_t_components._read()
self.components[i] = _t_components
self._debug['components']['arr'][i]['end'] = self._io.pos()
self._debug['components']['end'] = self._io.pos()
class Component(KaitaiStruct):
SEQ_FIELDS = ["id", "sampling_factors", "quantization_table_id"]
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['id']['start'] = self._io.pos()
self.id = KaitaiStream.resolve_enum(self._root.ComponentId, self._io.read_u1())
self._debug['id']['end'] = self._io.pos()
self._debug['sampling_factors']['start'] = self._io.pos()
self.sampling_factors = self._io.read_u1()
self._debug['sampling_factors']['end'] = self._io.pos()
self._debug['quantization_table_id']['start'] = self._io.pos()
self.quantization_table_id = self._io.read_u1()
self._debug['quantization_table_id']['end'] = self._io.pos()
@property
def sampling_x(self):
if hasattr(self, '_m_sampling_x'):
return self._m_sampling_x if hasattr(self, '_m_sampling_x') else None
self._m_sampling_x = ((self.sampling_factors & 240) >> 4)
return self._m_sampling_x if hasattr(self, '_m_sampling_x') else None
@property
def sampling_y(self):
if hasattr(self, '_m_sampling_y'):
return self._m_sampling_y if hasattr(self, '_m_sampling_y') else None
self._m_sampling_y = (self.sampling_factors & 15)
return self._m_sampling_y if hasattr(self, '_m_sampling_y') else None
class ExifInJpeg(KaitaiStruct):
SEQ_FIELDS = ["extra_zero", "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['extra_zero']['start'] = self._io.pos()
self.extra_zero = self._io.ensure_fixed_contents(b"\x00")
self._debug['extra_zero']['end'] = self._io.pos()
self._debug['data']['start'] = self._io.pos()
self._raw_data = self._io.read_bytes_full()
io = KaitaiStream(BytesIO(self._raw_data))
self.data = Exif(io)
self.data._read()
self._debug['data']['end'] = self._io.pos()
class SegmentApp0(KaitaiStruct):
class DensityUnit(Enum):
no_units = 0
pixels_per_inch = 1
pixels_per_cm = 2
SEQ_FIELDS = ["magic", "version_major", "version_minor", "density_units", "density_x", "density_y", "thumbnail_x", "thumbnail_y", "thumbnail"]
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.read_bytes(5)).decode(u"ASCII")
self._debug['magic']['end'] = self._io.pos()
self._debug['version_major']['start'] = self._io.pos()
self.version_major = self._io.read_u1()
self._debug['version_major']['end'] = self._io.pos()
self._debug['version_minor']['start'] = self._io.pos()
self.version_minor = self._io.read_u1()
self._debug['version_minor']['end'] = self._io.pos()
self._debug['density_units']['start'] = self._io.pos()
self.density_units = KaitaiStream.resolve_enum(self._root.SegmentApp0.DensityUnit, self._io.read_u1())
self._debug['density_units']['end'] = self._io.pos()
self._debug['density_x']['start'] = self._io.pos()
self.density_x = self._io.read_u2be()
self._debug['density_x']['end'] = self._io.pos()
self._debug['density_y']['start'] = self._io.pos()
self.density_y = self._io.read_u2be()
self._debug['density_y']['end'] = self._io.pos()
self._debug['thumbnail_x']['start'] = self._io.pos()
self.thumbnail_x = self._io.read_u1()
self._debug['thumbnail_x']['end'] = self._io.pos()
self._debug['thumbnail_y']['start'] = self._io.pos()
self.thumbnail_y = self._io.read_u1()
self._debug['thumbnail_y']['end'] = self._io.pos()
self._debug['thumbnail']['start'] = self._io.pos()
self.thumbnail = self._io.read_bytes(((self.thumbnail_x * self.thumbnail_y) * 3))
self._debug['thumbnail']['end'] = self._io.pos()
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