def __init__(self,
component_descriptor: ComponentDescriptor,
ld: LogicalData,
template_attribute: TemplateAttribute,
):
super().__init__(component_descriptor)
if self.component_descriptor.has_attribute_L:
self.label = RepCode.IDENT(ld)
else:
self.label = template_attribute.label
if self.component_descriptor.has_attribute_C:
self.count = RepCode.UVARI(ld)
else:
self.count = template_attribute.count
if self.component_descriptor.has_attribute_R:
self.rep_code = RepCode.USHORT(ld)
else:
self.rep_code = template_attribute.rep_code
if self.component_descriptor.has_attribute_U:
self.units = RepCode.UNITS(ld)
else:
self.units = template_attribute.units
if self.component_descriptor.has_attribute_V:
self.value = [RepCode.code_read(self.rep_code, ld) for _i in range(self.count)]
else:
self.value = template_attribute.value
def read(self, ld: LogicalData, frame_number: int) -> None:
"""Reads the Logical Data into the numpy frame at the specified frame number.
This is currently RP66V1 specific. In future designs this can be sub-classed by format (LAS, LIS, RP66V1 etc.)
"""
# if len(self.array) == 0:
# raise ExceptionFrameChannel(f'FrameChannelDLIS.read() array is not initialised.')
if frame_number >= len(self.array):
raise ExceptionFrameChannel(
f'FrameChannelDLIS.read() frame number {frame_number} is > than array size {len(self.array)}.'
)
for dim in self.numpy_indexes(frame_number):
# dim is a tuple of length self.rank + 1
value = RepCode.code_read(self.rep_code, ld)
self.array[dim] = value
def test_code_read_raises():
with pytest.raises(RepCode.ExceptionRepCode) as err:
RepCode.code_read(0, None)
assert err.value.args[0] == 'Unsupported Representation code 0'
def test_code_read(rc, ld, expected):
assert RepCode.code_read(rc, ld) == expected
