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#!/usr/bin/env python
import datetime
import json
import gzip
import os
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_FILENAME = "segment.json"
TOBII_SEGMENT_VIDEO_FILENAME = "fullstream.mp4"
TOBII_SEGMENT_LIVEDATA_FILENAME = "livedata.json.gz"
class TobiiSegmentVideo:
"""Handle Tobii Glasses Pro 2 segment video file."""
def __init__(self, segment_video_path):
"""Load segment video from segment directory."""
self.__segment_video_path = segment_video_path
cap = cv.VideoCapture(self.__segment_video_path)
self.__width = int(cap.get(cv.CAP_PROP_FRAME_WIDTH))
self.__height = int(cap.get(cv.CAP_PROP_FRAME_HEIGHT))
self.__fps = int(cap.get(cv.CAP_PROP_FPS))
def get_path(self):
return self.__segment_video_path
def get_height(self):
return self.__height
def get_width(self):
return self.__width
def get_fps(self):
return self.__fps
class TobiiSegment:
"""Handle Tobii Glasses Pro 2 segment info, data and video."""
def __init__(self, segment_path):
"""Load segment info from segment directory."""
self.__segment_id = os.path.basename(segment_path)
self.__segment_path = segment_path
with open(os.path.join(self.__segment_path, TOBII_SEGMENT_FILENAME)) as f:
try:
item = json.load(f)
except:
raise RuntimeError(f'JSON fails to load {self.__segment_path}/{TOBII_SEGMENT_FILENAME}')
self.__length_us = int(item["seg_length_us"])
self.__calibrated = bool(item["seg_calibrated"])
self.__time_start = datetime.datetime.strptime(item["seg_t_start"], TOBII_DATETIME_FORMAT)
self.__time_stop = datetime.datetime.strptime(item["seg_t_stop"], TOBII_DATETIME_FORMAT)
def get_path(self):
return self.__segment_path
def get_id(self):
return self.__segment_id
def get_length_us(self):
return self.__length_us
def get_live_data_filepath(self):
return os.path.join(self.__segment_path, self.__segment_id)
def get_start_date_time(self):
return self.__time_start
def get_stop_date_time(self):
return self.__time_stop
def is_calibrated(self):
return self.__calibrated
def get_video(self):
return TobiiSegmentVideo(os.path.join(self.__segment_path, TOBII_SEGMENT_VIDEO_FILENAME))
class TobiiRecording:
"""Handle Tobii Glasses Pro 2 recording info and segments."""
def __init__(self, recording_path):
"""Load recording info from recording directory."""
self.__recording_id = os.path.basename(recording_path)
self.__recording_path = recording_path
self.__project_path = os.path.dirname(os.path.dirname(os.path.abspath(self.__recording_path)))
with open(os.path.join(self.__recording_path, TOBII_RECORD_FILENAME)) as f:
try:
item = json.load(f)
except:
raise RuntimeError(f'JSON fails to load {self.__recording_path}/{TOBII_RECORD_FILENAME}')
self.__recording_created = datetime.datetime.strptime(item["rec_created"], TOBII_DATETIME_FORMAT)
self.__recording_name = item["rec_info"]["Name"]
self.__recording_length = int(item["rec_length"])
self.__recording_segments = int(item["rec_segments"])
self.__recording_et_samples = int(item["rec_et_samples"])
self.__recording_et_valid_samples = int(item["rec_et_valid_samples"])
self.__project = TobiiProject(self.__project_path)
self.__participant = TobiiParticipant(self.__recording_path)
def get_attributes(self):
"""Get recording attributes dictionnary."""
attr = []
names = []
names.append("Recording name"); attr.append(self.__recording_name)
names.append("Project name"); attr.append(self.__project.getName())
names.append("Creation Date"); attr.append(str(self.__recording_created))
names.append("Duration (s)"); attr.append(str(self.__recording_length))
names.append("Participant name"); attr.append(self.__participant.getName())
names.append("Segments"); attr.append(str(self.__recording_segments))
names.append("Et samples"); attr.append(str(self.__recording_et_samples))
names.append("Et valid samples"); attr.append(str(self.__recording_et_valid_samples))
return (names, attr)
def get_path(self):
return self.__recording_path
def get_creation_date(self):
return self.__recording_created
def get_et_samples(self):
return self.__recording_et_samples
def get_et_valid_samples(self):
return self.__recording_et_valid_samples
def get_id(self):
return self.__recording_id
def get_length(self):
return self.__recording_length
def get_name(self):
return self.__recording_name
def get_participant(self):
return self.__participant
def get_recording_directory(self):
return self.__recording_dir
def get_segment(self, segment_id):
if segment_id > 0:
return self.__segments[segment_id-1]
raise ValueError('Cannot get segment less or equal to zero')
def get_all_segments(self):
all_segments = []
segments_path = os.path.join(self.__recording_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.__participant_id = os.path.basename(participant_path)
self.__participant_path = participant_path
with open(os.path.join(self.__participant_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.__participant_name = item["pa_info"]["Name"]
def get_path(self):
return self.__participant_path
def get_id(self):
return self.__participant_id
def get_name(self):
return self.__participant_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.__project_id = os.path.basename(project_path)
self.__project_path = project_path
with open(os.path.join(self.__project_path, TOBII_PROJECT_FILENAME)) as f:
try:
item = json.load(f)
except:
raise RuntimeError(f'JSON fails to load {self.__project_path}/{TOBII_PROJECT_FILENAME}')
self.__project_created = datetime.datetime.strptime(item["pr_created"], TOBII_DATETIME_FORMAT)
try:
self.__project_name = item["pr_info"]["Name"]
except:
self.__project_name = None
def get_path(self):
return self.__project_path
def get_creation_date(self):
return self.__project_created
def get_id(self):
return self.__project_id
def get_name(self):
return self.__project_name
def get_all_participants(self):
all_participants = []
participants_path = os.path.join(self.__project_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 get_all_recordings(self):
all_recordings = []
recordings_path = os.path.join(self.__project_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.__drive_path = drive_path
def get_path(self):
return self.__drive_path
def get_all_projects(self):
all_projects = []
projects_path = os.path.join(self.__drive_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
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