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#!/usr/bin/env python3.4
#
# 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.
#
# A helper class to generate MIXED property values that can be
# set as the value for a diagnostic frame
# Spritually, the same as DiagnosticEventBuilder.java
from diagnostic_sensors import DIAGNOSTIC_SENSOR_INTEGER_LAST_SYSTEM_INDEX
from diagnostic_sensors import DIAGNOSTIC_SENSOR_FLOAT_LAST_SYSTEM_INDEX
class DiagnosticEventBuilder(object):
class ByteArray(object):
def __init__(self, numElements):
self.count = numElements
if 0 == (numElements % 8):
self.data = bytearray(numElements/8)
else:
# if not a multiple of 8, add one extra byte
self.data = bytearray(1+numElements/8)
def _getIndices(self, bit):
if (bit < 0) or (bit >= self.count):
raise IndexError("index %d not in range [0,%d)" % (bit, self.count))
byteIdx = bit / 8
bitIdx = (bit % 8)
return byteIdx, bitIdx
def setBit(self, bit):
byteIdx, bitIdx = self._getIndices(bit)
bitValue = pow(2,bitIdx)
self.data[byteIdx] = self.data[byteIdx] | bitValue
def getBit(self, bit):
byteIdx, bitIdx = self._getIndices(bit)
bitValue = pow(2,bitIdx)
return 0 != self.data[byteIdx] & bitValue
def __str__(self):
return str(self.data)
def __init__(self, propConfig):
self.string_value = ""
self.bytes = ""
self.numIntSensors = propConfig.config[0].config_array[0] + \
DIAGNOSTIC_SENSOR_INTEGER_LAST_SYSTEM_INDEX + 1
self.numFloatSensors = propConfig.config[0].config_array[1] + \
DIAGNOSTIC_SENSOR_FLOAT_LAST_SYSTEM_INDEX + 1
self.bitmask = DiagnosticEventBuilder.ByteArray(
self.numIntSensors+self.numFloatSensors)
self.int32_values = [0] * self.numIntSensors
self.float_values = [0.0] * self.numFloatSensors
def addIntSensor(self, idx, value):
self.int32_values[idx] = value
self.bitmask.setBit(idx)
return self
def addFloatSensor(self, idx, value):
self.float_values[idx] = value
self.bitmask.setBit(len(self.int32_values)+idx)
return self
def setStringValue(self, string):
self.string_value = string
return self
def build(self):
self.bytes_value = str(self.bitmask)
return self
def __str__(self):
s = "diagnostic event {\n"
for x in ['string_value', 'int32_values', 'float_values']:
s = s + "\t%s: %s\n" % (x, self.__dict__[x])
return s + "}"