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# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild
import array
import struct
import zlib
from enum import Enum
from pkg_resources import parse_version
from kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO
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
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self.segments = []
while not self._io.is_eof():
self.segments.append(self._root.Segment(self._io, self, self._root))
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
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self.magic = self._io.ensure_fixed_contents(struct.pack('1b', -1))
self.marker = self._root.Segment.MarkerEnum(self._io.read_u1())
if ((self.marker != self._root.Segment.MarkerEnum.soi) and (self.marker != self._root.Segment.MarkerEnum.eoi)) :
self.length = self._io.read_u2be()
if ((self.marker != self._root.Segment.MarkerEnum.soi) and (self.marker != self._root.Segment.MarkerEnum.eoi)) :
_on = self.marker
if _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)
elif _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)
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)
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)
else:
self.data = self._io.read_bytes((self.length - 2))
if self.marker == self._root.Segment.MarkerEnum.sos:
self.image_data = self._io.read_bytes_full()
class SegmentSos(KaitaiStruct):
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self.num_components = self._io.read_u1()
self.components = [None] * (self.num_components)
for i in range(self.num_components):
self.components[i] = self._root.SegmentSos.Component(self._io, self, self._root)
self.start_spectral_selection = self._io.read_u1()
self.end_spectral = self._io.read_u1()
self.appr_bit_pos = self._io.read_u1()
class Component(KaitaiStruct):
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self.id = self._root.ComponentId(self._io.read_u1())
self.huffman_table = self._io.read_u1()
class SegmentApp1(KaitaiStruct):
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self.magic = (self._io.read_bytes_term(0, False, True, True)).decode(u"ASCII")
_on = self.magic
if _on == u"Exif":
self.body = self._root.ExifInJpeg(self._io, self, self._root)
class SegmentSof0(KaitaiStruct):
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self.bits_per_sample = self._io.read_u1()
self.image_height = self._io.read_u2be()
self.image_width = self._io.read_u2be()
self.num_components = self._io.read_u1()
self.components = [None] * (self.num_components)
for i in range(self.num_components):
self.components[i] = self._root.SegmentSof0.Component(self._io, self, self._root)
class Component(KaitaiStruct):
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self.id = self._root.ComponentId(self._io.read_u1())
self.sampling_factors = self._io.read_u1()
self.quantization_table_id = self._io.read_u1()
@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):
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self.extra_zero = self._io.ensure_fixed_contents(struct.pack('1b', 0))
self._raw_data = self._io.read_bytes_full()
io = KaitaiStream(BytesIO(self._raw_data))
self.data = Exif(io)
class SegmentApp0(KaitaiStruct):
class DensityUnit(Enum):
no_units = 0
pixels_per_inch = 1
pixels_per_cm = 2
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self.magic = (self._io.read_bytes(5)).decode(u"ASCII")
self.version_major = self._io.read_u1()
self.version_minor = self._io.read_u1()
self.density_units = self._root.SegmentApp0.DensityUnit(self._io.read_u1())
self.density_x = self._io.read_u2be()
self.density_y = self._io.read_u2be()
self.thumbnail_x = self._io.read_u1()
self.thumbnail_y = self._io.read_u1()
self.thumbnail = self._io.read_bytes(((self.thumbnail_x * self.thumbnail_y) * 3))
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