229 lines
7.1 KiB
Python
Executable File
229 lines
7.1 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
#
|
|
# Copyright (C) 2017 The Android Open Source Project
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
#
|
|
|
|
# OBD2 standard sensor indices are different from those used by the
|
|
# Android Auto Diagnostics API. This script maps from OBD2 sensors to
|
|
# those expected by the Diagnostics API.
|
|
# To use:
|
|
# ./obd2_to_diagjson.py --src file1.json --dst file2.json
|
|
# It is acceptable and supported to point --src and --dst to the same file
|
|
|
|
import collections
|
|
import json
|
|
import os, os.path, sys
|
|
|
|
class Json(object):
|
|
@classmethod
|
|
def load(cls, file):
|
|
return Json(json.load(file))
|
|
|
|
@classmethod
|
|
def wrapIfNeeded(cls, item):
|
|
if isinstance(item, list) or isinstance(item, dict):
|
|
return Json(item)
|
|
return item
|
|
|
|
def __init__(self, doc):
|
|
self.doc = doc
|
|
|
|
def __str__(self):
|
|
return str(self.doc)
|
|
|
|
def __repr__(self):
|
|
return self.__str__()
|
|
|
|
def __getattr__(self, attr):
|
|
return Json.wrapIfNeeded(self.doc.get(attr))
|
|
|
|
def __iter__(self):
|
|
class Iter(object):
|
|
def __init__(self, doc):
|
|
self.doc = doc.__iter__()
|
|
|
|
def __next__(self):
|
|
return Json.wrapIfNeeded(self.doc.__next__())
|
|
|
|
return Iter(self.doc)
|
|
|
|
class OrderedStore(object):
|
|
def __init__(self):
|
|
self.__dict__['store'] = collections.OrderedDict()
|
|
|
|
def __setattr__(self, name, value):
|
|
self.__dict__['store'][name] = value
|
|
|
|
def __getattr__(self, name):
|
|
return self.__dict__['store'][name]
|
|
|
|
def get(self, name, default=None):
|
|
return self.__dict__['store'].get(name, default)
|
|
|
|
def getStore(self):
|
|
return self.__dict__['store']
|
|
|
|
def __iter__(self):
|
|
return iter(self.__dict__['store'])
|
|
|
|
def __delattr__(self, name):
|
|
del self.__dict__['store'][name]
|
|
|
|
def __str__(self):
|
|
return str(self.__dict__['store'])
|
|
|
|
def toJSON(self):
|
|
return json.dumps(self.store)
|
|
|
|
class Event(object):
|
|
def __init__(self):
|
|
self.store = OrderedStore()
|
|
|
|
def setTimestamp(self, timestamp):
|
|
self.store.timestamp = timestamp
|
|
return self
|
|
|
|
def getTimestamp(self):
|
|
return self.store.timestamp
|
|
|
|
def setType(self, type):
|
|
self.store.type = type
|
|
return self
|
|
|
|
def getType(self):
|
|
return self.store.type
|
|
|
|
def setStringValue(self, string):
|
|
if string:
|
|
self.store.stringValue = string
|
|
return self
|
|
|
|
def getStringValue(self):
|
|
return self.store.get('stringValue')
|
|
|
|
def setIntValue(self, id, value):
|
|
if 'intValues' not in self.store:
|
|
self.store.intValues = []
|
|
d = collections.OrderedDict()
|
|
d['id'] = id
|
|
d['value'] = value
|
|
self.store.intValues.append(d)
|
|
return self
|
|
|
|
def intValues(self):
|
|
if 'intValues' not in self.store:
|
|
return []
|
|
for value in self.store.intValues:
|
|
yield (value['id'], value['value'])
|
|
|
|
def setFloatValue(self, id, value):
|
|
if 'floatValues' not in self.store:
|
|
self.store.floatValues = []
|
|
d = collections.OrderedDict()
|
|
d['id'] = id
|
|
d['value'] = value
|
|
self.store.floatValues.append(d)
|
|
return self
|
|
|
|
def floatValues(self):
|
|
if 'floatValues' not in self.store:
|
|
return []
|
|
for value in self.store.floatValues:
|
|
yield (value['id'], value['value'])
|
|
|
|
@classmethod
|
|
def fromJson(cls, json):
|
|
event = Event()
|
|
event.setTimestamp(json.timestamp)
|
|
event.setType(json.type)
|
|
for intValue in json.intValues:
|
|
event.setIntValue(intValue.id, intValue.value)
|
|
for floatValue in json.floatValues:
|
|
event.setFloatValue(floatValue.id, floatValue.value)
|
|
event.setStringValue(json.stringValue)
|
|
return event
|
|
|
|
def transform(self, intMapping, floatMapping):
|
|
event = Event()
|
|
event.setTimestamp(self.getTimestamp())
|
|
event.setType(self.getType())
|
|
for id, value in self.intValues():
|
|
if id in intMapping:
|
|
intMapping[id](event, value)
|
|
else:
|
|
print('warning: integer id 0x%x not found in mapping. dropped.' % id)
|
|
for id, value in self.floatValues():
|
|
if id in floatMapping:
|
|
floatMapping[id](event, value)
|
|
else:
|
|
print('warning: float id 0x%x not found in mapping. dropped.' % id)
|
|
event.setStringValue(self.getStringValue())
|
|
return event
|
|
|
|
def getStore(self):
|
|
return self.store.getStore()
|
|
|
|
class EventEncoder(json.JSONEncoder):
|
|
def default(self, o):
|
|
if isinstance(o, Event):
|
|
return o.getStore()
|
|
|
|
# Mappings between standard OBD2 sensors and the indices
|
|
# used by Vehicle HAL
|
|
intSensorsMapping = {
|
|
0x03 : lambda event,value: event.setIntValue(0, value),
|
|
0x05 : lambda event,value: event.setFloatValue(1, value),
|
|
0x0A : lambda event,value: event.setIntValue(22, value),
|
|
0x0C : lambda event,value: event.setFloatValue(8, value),
|
|
0x0D : lambda event,value: event.setFloatValue(9, value),
|
|
0x1F : lambda event,value: event.setIntValue(7, value),
|
|
0x5C : lambda event,value: event.setIntValue(23, value),
|
|
}
|
|
|
|
floatSensorsMapping = {
|
|
0x04 : lambda event, value: event.setFloatValue(0, value),
|
|
0x06 : lambda event, value: event.setFloatValue(2, value),
|
|
0x07 : lambda event, value: event.setFloatValue(3, value),
|
|
0x08 : lambda event, value: event.setFloatValue(4, value),
|
|
0x09 : lambda event, value: event.setFloatValue(5, value),
|
|
0x11 : lambda event, value: event.setFloatValue(12, value),
|
|
0x2F : lambda event, value: event.setFloatValue(42, value),
|
|
0x46 : lambda event, value: event.setIntValue(13, int(value)),
|
|
}
|
|
|
|
def parseOptions():
|
|
from argparse import ArgumentParser
|
|
parser = ArgumentParser(description='OBD2 to Diagnostics JSON Converter')
|
|
parser.add_argument('--src', '-S', dest='source_file',
|
|
help='The source file to convert from', required=True)
|
|
parser.add_argument('--dst', '-D', dest='destination_file',
|
|
help='The destination file to convert to', required=True)
|
|
return parser.parse_args()
|
|
|
|
args = parseOptions()
|
|
if not os.path.exists(args.source_file):
|
|
print('source file %s does not exist' % args.source_file)
|
|
sys.exit(1)
|
|
|
|
source_json = Json.load(open(args.source_file))
|
|
dest_events = []
|
|
|
|
for source_json_event in source_json:
|
|
source_event = Event.fromJson(source_json_event)
|
|
destination_event = source_event.transform(intSensorsMapping, floatSensorsMapping)
|
|
dest_events.append(destination_event)
|
|
|
|
json.dump(dest_events, open(args.destination_file, 'w'), cls=EventEncoder)
|