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|
#!/usr/bin/env python
from typing import TypeVar
import datetime
import json
import os
from argaze.TobiiGlassesPro2 import TobiiData, TobiiVideo
import av
import cv2 as cv
TOBII_DATETIME_FORMAT = '%Y-%m-%dT%H:%M:%S+%f'
TOBII_PROJECTS_DIRNAME = "projects"
TOBII_PROJECT_FILENAME = "project.json"
TOBII_PARTICIPANTS_DIRNAME = "participants"
TOBII_PARTICIPANT_FILENAME = "participant.json"
TOBII_RECORDINGS_DIRNAME = "recordings"
TOBII_RECORD_FILENAME = "recording.json"
TOBII_SEGMENTS_DIRNAME = "segments"
TOBII_SEGMENT_INFO_FILENAME = "segment.json"
TOBII_SEGMENT_VIDEO_FILENAME = "fullstream.mp4"
TOBII_SEGMENT_DATA_FILENAME = "livedata.json.gz"
DatetimeType = TypeVar('datetime', bound="datetime")
# Type definition for type annotation convenience
class TobiiSegment:
"""Handle Tobii Glasses Pro 2 segment info."""
def __init__(self, segment_path, start_timestamp:int = 0, end_timestamp:int = None):
"""Load segment info from segment directory.
Optionnaly select a time range in microsecond."""
self.__id = os.path.basename(segment_path)
self.__path = segment_path
with open(os.path.join(self.__path, TOBII_SEGMENT_INFO_FILENAME)) as f:
try:
item = json.load(f)
except:
raise RuntimeError(f'JSON fails to load {self.__path}/{TOBII_SEGMENT_INFO_FILENAME}')
self.__start_timestamp = start_timestamp
self.__end_timestamp = min(end_timestamp, int(item["seg_length"] * 1e6)) if end_timestamp != None else int(item["seg_length"] * 1e6)
if self.__start_timestamp >= self.__end_timestamp:
raise ValueError('start time is equal or greater than end time.')
self.__calibrated = bool(item["seg_calibrated"])
self.__start_date = datetime.datetime.strptime(item["seg_t_start"], TOBII_DATETIME_FORMAT)
self.__stop_date = datetime.datetime.strptime(item["seg_t_stop"], TOBII_DATETIME_FORMAT)
@property
def path(self) -> str:
"""Get segment path."""
return self.__path
@property
def id(self) -> str:
"""Get segment id."""
return self.__id
@property
def start_timestamp(self) -> int:
"""Get the timestamp where the segment loading starts."""
return self.__start_timestamp
@property
def end_timestamp(self) -> int:
"""Get the timestamp where the segment loading ends."""
return self.__end_timestamp
@property
def start_date(self) -> DatetimeType:
"""Get the date when the segment has started."""
return self.__start_date
@property
def stop_date(self) -> DatetimeType:
"""Get the date when the segment has stopped."""
return self.__stop_date
@property
def calibrated(self) -> bool:
"""Is the segment has been calibrated?"""
return self.__calibrated
def load_data(self) -> "TobiiData.TobiiDataSegment":
"""Load recorded data stream."""
return TobiiData.TobiiDataSegment(os.path.join(self.__path, TOBII_SEGMENT_DATA_FILENAME), self.__start_timestamp, self.__end_timestamp)
def load_video(self) -> "TobiiVideo.TobiiVideoSegment":
"""Load recorded video stream."""
return TobiiVideo.TobiiVideoSegment(os.path.join(self.__path, TOBII_SEGMENT_VIDEO_FILENAME), self.__start_timestamp, self.__end_timestamp)
class TobiiRecording:
"""Handle Tobii Glasses Pro 2 recording info and segments."""
def __init__(self, recording_path):
"""Load recording info from recording directory."""
self.__id = os.path.basename(recording_path)
self.__path = recording_path
with open(os.path.join(self.__path, TOBII_RECORD_FILENAME)) as f:
try:
item = json.load(f)
except:
raise RuntimeError(f'JSON fails to load {self.__path}/{TOBII_RECORD_FILENAME}')
self.__name = item["rec_info"]["Name"]
self.__creation_date = datetime.datetime.strptime(item["rec_created"], TOBII_DATETIME_FORMAT)
self.__length = int(item["rec_length"])
self.__et_samples = int(item["rec_et_samples"])
self.__et_samples_valid = int(item["rec_et_valid_samples"])
self.__participant_id = item["rec_participant"]
@property
def path(self) -> str:
"""Get recording path."""
return self.__path
@property
def id(self) -> str:
"""Get recording id."""
return self.__id
@property
def name(self) -> str:
"""Get recording name."""
return self.__name
@property
def creation_date(self) -> DatetimeType:
"""Get date when the recording has been done."""
return self.__creation_date
@property
def length(self):
"""Get record duration in second."""
return self.__length
@property
def eyetracker_samples(self) -> int:
"""Get numbers of recorded eye detecter samples."""
return self.__et_samples
@property
def eyetracker_samples_valid(self) -> int:
"""Get numbers of recorded eye detecter valid samples."""
return self.__et_samples_valid
@property
def project(self) -> "TobiiProject":
"""Get project to which it belongs."""
project_path = os.path.dirname(os.path.dirname(os.path.abspath(self.__path)))
return TobiiProject(project_path)
@property
def participant(self) -> "TobiiParticipant":
"""Get participant to which it belongs."""
project_path = os.path.dirname(os.path.dirname(os.path.abspath(self.__path)))
return TobiiParticipant(project_path + '/participants/' + self.__participant_id)
def segments(self) -> list["TobiiSegment"]:
"""Get all recorded segments."""
all_segments = []
segments_path = os.path.join(self.__path, TOBII_SEGMENTS_DIRNAME)
for item in os.listdir(segments_path):
segment_path = os.path.join(segments_path, item)
if os.path.isdir(segment_path):
all_segments.append(TobiiSegment(segment_path))
return all_segments
class TobiiParticipant:
"""Handle Tobii Glasses Pro 2 participant data."""
def __init__(self, participant_path):
"""Load participant data from path"""
self.__id = os.path.basename(participant_path)
self.__path = participant_path
with open(os.path.join(self.__path, TOBII_PARTICIPANT_FILENAME)) as f:
try:
item = json.load(f)
except:
raise RuntimeError(f'JSON fails to load {source_dir}/{TOBII_PARTICIPANT_FILENAME}')
self.__name = item["pa_info"]["Name"]
@property
def path(self) -> str:
"""Get participant path."""
return self.__path
@property
def id(self) -> str:
"""Get participant id."""
return self.__id
@property
def name(self) -> str:
"""Get participant name."""
return self.__name
class TobiiProject:
"""Handle Tobii Glasses Pro 2 project data."""
def __init__(self, project_path):
"""Load project data from projects directory and project id."""
self.__id = os.path.basename(project_path)
self.__path = project_path
with open(os.path.join(self.__path, TOBII_PROJECT_FILENAME)) as f:
try:
item = json.load(f)
except:
raise RuntimeError(f'JSON fails to load {self.__path}/{TOBII_PROJECT_FILENAME}')
self.__creation_date = datetime.datetime.strptime(item["pr_created"], TOBII_DATETIME_FORMAT)
try:
self.__name = item["pr_info"]["Name"]
except:
self.__name = None
@property
def path(self) -> str:
"""Get project path."""
return self.__path
@property
def id(self) -> str:
"""Get project id."""
return self.__id
@property
def name(self) -> str:
"""Get project name."""
return self.__name
@property
def creation_date(self) -> DatetimeType:
"""Get date when the project has been created."""
return self.__creation_date
def participants(self) -> list["TobiiParticipant"]:
"""Get all participants."""
all_participants = []
participants_path = os.path.join(self.__path, TOBII_PARTICIPANTS_DIRNAME)
for item in os.listdir(participants_path):
participant_path = os.path.join(participants_path, item)
if os.path.isdir(participant_path):
all_participants.append(TobiiParticipant(participant_path))
return all_participants
def recordings(self) -> list["TobiiRecording"]:
"""Get all recordings."""
all_recordings = []
recordings_path = os.path.join(self.__path, TOBII_RECORDINGS_DIRNAME)
for item in os.listdir(recordings_path):
recording_path = os.path.join(recordings_path, item)
if os.path.isdir(recording_path):
all_recordings.append(TobiiRecording(recording_path))
return all_recordings
class TobiiDrive:
"""Handle Tobii Glasses Pro 2 drive data."""
def __init__(self, drive_path):
"""Load drive data from drive directory path."""
self.__path = drive_path
@property
def path(self) -> str:
"""Get drive path."""
return self.__path
def projects(self) -> list["TobiiProject"]:
"""Get all projects."""
all_projects = []
projects_path = os.path.join(self.__path, TOBII_PROJECTS_DIRNAME)
for item in os.listdir(projects_path):
project_path = os.path.join(projects_path, item)
if os.path.isdir(project_path):
all_projects.append(TobiiProject(project_path))
return all_projects
|
