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#!/usr/bin/env python
""" """
__author__ = "Théo de la Hogue"
__credits__ = []
__copyright__ = "Copyright 2023, Ecole Nationale de l'Aviation Civile (ENAC)"
__license__ = "BSD"
from typing import TypeVar
from dataclasses import dataclass, field
import json
from argaze import DataFeatures
@dataclass(frozen=True)
class PupillDiameter():
"""Define pupill diameter as ..."""
value: float = field(default=0.)
"""Pupill diameter value."""
@property
def valid(self) -> bool:
"""Is the value not 0"""
return self.value != 0.
def __repr__(self):
"""String representation"""
return json.dumps(self, ensure_ascii = False, default=vars)
class UnvalidPupillDiameter(PupillDiameter):
"""Unvalid pupill diameter."""
def __init__(self, message=None):
self.message = message
super().__init__(0.)
TimeStampedPupillDiametersType = TypeVar('TimeStampedPupillDiameters', bound="TimeStampedPupillDiameters")
# Type definition for type annotation convenience
class TimeStampedPupillDiameters(DataFeatures.TimeStampedBuffer):
"""Define timestamped buffer to store pupill diameters."""
def __setitem__(self, key, value: PupillDiameter|dict):
"""Force PupillDiameter storage."""
# Convert dict into PupillDiameter
if type(value) == dict:
assert(set(['value']).issubset(value.keys()))
if 'message' in value.keys():
value = UnvalidPupillDiameter(value['message'])
else:
value = PupillDiameter(value['value'])
assert(type(value) == PupillDiameter or type(value) == UnvalidPupillDiameter)
super().__setitem__(key, value)
@classmethod
def from_json(self, json_filepath: str) -> TimeStampedPupillDiametersType:
"""Create a TimeStampedPupillDiametersType from .json file."""
with open(json_filepath, encoding='utf-8') as ts_buffer_file:
json_buffer = json.load(ts_buffer_file)
return TimeStampedPupillDiameters({ast.literal_eval(ts_str): json_buffer[ts_str] for ts_str in json_buffer})
TimeStampedBufferType = TypeVar('TimeStampedBuffer', bound="TimeStampedBuffer")
# Type definition for type annotation convenience
class PupillDiameterAnalyzer(DataFeatures.PipelineStepObject):
"""Abstract class to define what should provide a pupill diameter analyser."""
@DataFeatures.PipelineStepMethod
def analyze(self, ts, pupill_diameter) -> float:
"""Analyze pupill diameter from successive timestamped pupill diameters."""
raise NotImplementedError('analyze() method not implemented')
def browse(self, ts_pupill_diameters: TimeStampedPupillDiameters) -> TimeStampedBufferType:
"""Analyze by browsing timestamped pupill diameters."""
assert(type(ts_pupill_diameters) == TimeStampedPupillDiameters)
ts_analyzis = DataFeatures.TimeStampedBuffer()
# Iterate on pupill diameters
for ts, pupill_diameter in ts_pupill_diameters.items():
analysis = self.analyze(ts, pupill_diameter)
if analysis is not None:
ts_analyzis[ts] = analysis
return ts_analyzis
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