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compat.py
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compat.py
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from plyer.utils import platform
from plyer import storagepath
import threading
import time
from collections import deque
from random import random
from statistics import mean
import numpy as np
from kivy.logger import Logger as log
from copy import deepcopy
from config import *
if platform == 'android':
from plyer.platforms.android import activity
from jnius import autoclass
from android.runnable import run_on_ui_thread
#workaround, see https://github.com/kivy/pyjnius/issues/137#issuecomment-248673727
autoclass('org.jnius.NativeInvocationHandler')
else:
def run_on_ui_thread(func):
def wrapper(args):
return func(args)
return wrapper
class LockScreen():
def __init__(self):
if platform != 'android':
return
self.params = autoclass('android.view.WindowManager$LayoutParams')
self.window = activity.getWindow()
@run_on_ui_thread
def set(self):
if platform != 'android':
return
self.window.addFlags(self.params.FLAG_KEEP_SCREEN_ON)
@run_on_ui_thread
def unset(self):
if platform != 'android':
return
self.window.clearFlags(self.params.FLAG_KEEP_SCREEN_ON)
iq = lambda x, m: deque([x] * m, maxlen=m)
if platform == 'android':
from jnius import PythonJavaClass, java_method, autoclass, cast
from plyer.platforms.android import activity
Context = autoclass('android.content.Context')
Sensor = autoclass('android.hardware.Sensor')
SensorManager = autoclass('android.hardware.SensorManager')
AXIS_X = SensorManager.AXIS_X
AXIS_Z = SensorManager.AXIS_Z
class SensorListener(PythonJavaClass):
__javainterfaces__ = ['android/hardware/SensorEventListener']
accuracy = 3
def __init__(self, default_rate, buffer_len):
super().__init__()
service = activity.getSystemService(Context.SENSOR_SERVICE)
self.SensorManager = cast('android.hardware.SensorManager', service)
self.cnt = 0
self.lock = threading.Lock()
self.rate = default_rate
self.q = iq((0.0, 0.0, 0.0), buffer_len)
self.tq = iq(0, buffer_len)
self.last_time = 0
def enable(self):
self.SensorManager.registerListener(
self, self.sensor,
SensorManager.SENSOR_DELAY_FASTEST
)
def disable(self):
self.SensorManager.unregisterListener(self, self.sensor)
def calc_rate(self, tstamp):
self.cnt += 1
diff = tstamp - self.last_time
if diff >= 1e9:
self.rate = self.cnt / diff * 1e9
self.last_time = tstamp
self.cnt = 0
@java_method('(Landroid/hardware/Sensor;I)V')
def onAccuracyChanged(self, sensor, accuracy):
log.info(f"onAccuracyChanged {self.name} {accuracy}")
class AccelerometerSensorListener(SensorListener):
def __init__(self):
super().__init__(default_rate=DEFAULT_ACCELEROMETER_RATE, buffer_len = ACCELEROMETER_BUFFER_LEN)
self.name = 'acc'
self.small_q = deque([0.0,0.0,0.0] * SMALLQ_BUFFER_LEN, maxlen=SMALLQ_BUFFER_LEN)
self.sensor = self.SensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER)
@java_method('(Landroid/hardware/SensorEvent;)V')
def onSensorChanged(self, event):
self.accuracy = event.accuracy
with self.lock:
self.small_q.append(event.values)
self.q.append(event.values)
self.tq.append(event.timestamp)
self.calc_rate(event.timestamp)
class MagnetometerSensorListener(SensorListener):
def __init__(self, acc):
super().__init__(default_rate=DEFAULT_ORIENTATION_RATE, buffer_len = ORIENTATION_BUFFER_LEN)
self.name = 'ori'
self.acc = acc
self.sensor = self.SensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD)
self.rotation = [0.0] * 9
self.remapped_rotation = deepcopy(self.rotation)
self.values = [0.0] * 3
@java_method('(Landroid/hardware/SensorEvent;)V')
def onSensorChanged(self, event):
#get gravity
with self.acc.lock:
acc_values = np.array(self.acc.small_q)
gravity = list(np.median(acc_values, axis=0))
self.SensorManager.getRotationMatrix(self.rotation, None, gravity, event.values)
#from https://developer.android.com/reference/android/hardware/SensorManager#remapCoordinateSystem(float[],%20int,%20int,%20float[])
#Using the camera (Y axis along the camera's axis) for an augmented reality application where the rotation angles are needed:
SensorManager.remapCoordinateSystem(self.rotation, AXIS_X, AXIS_Z, self.remapped_rotation)
values = deepcopy(self.values)
self.SensorManager.getOrientation(self.remapped_rotation, values)
#flip pitch direction for graph to follow phone movement
values[1] = -values[1]
with self.lock:
self.q.append(values)
self.tq.append(event.timestamp)
self.calc_rate(event.timestamp)
self.accuracy = event.accuracy
class OrientationSensorListener(SensorListener):
def __init__(self):
super().__init__(default_rate=DEFAULT_ORIENTATION_RATE, buffer_len = ORIENTATION_BUFFER_LEN)
self.name = 'ori'
self.sensor = self.SensorManager.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR)
self.rotation = [0.0] * 9
self.remapped_rotation = deepcopy(self.rotation)
self.values = [0.0] * 3
@java_method('(Landroid/hardware/SensorEvent;)V')
def onSensorChanged(self, event):
self.SensorManager.getRotationMatrixFromVector(self.rotation, event.values);
#from https://developer.android.com/reference/android/hardware/SensorManager#remapCoordinateSystem(float[],%20int,%20int,%20float[])
#Using the camera (Y axis along the camera's axis) for an augmented reality application where the rotation angles are needed:
SensorManager.remapCoordinateSystem(self.rotation, AXIS_X, AXIS_Z, self.remapped_rotation)
values = deepcopy(self.values)
self.SensorManager.getOrientation(self.remapped_rotation, values)
#flip pitch direction for graph to follow phone movement
values[1] = -values[1]
with self.lock:
self.q.append(values)
self.tq.append(event.timestamp)
self.calc_rate(event.timestamp)
self.accuracy = event.accuracy
#log.info(f'accuracy: {event.accuracy} values: {event.values}')
class Dummy:
def __init__(self, _rate, type='acc', buffer_len=1):
self.rate = _rate
self._rate = _rate
self.accuracy = 3
self.type = type
self.last_time = time.monotonic_ns()
self.q = iq((0.0, 0.0, 0.0), buffer_len)
self.tq = iq(0, buffer_len)
self.cnt = 0
self.lock = threading.Lock()
def enable(self):
self.run = True
do_th = threading.Thread(target=self.do, daemon=True, name=self.type)
do_th.start()
def disable(self):
self.run = False
def calc_rate(self, tstamp):
self.cnt += 1
diff = tstamp - self.last_time
if diff >= 1e9:
self.last_time = tstamp
self.rate = self.cnt / diff * 1e9
self.cnt = 0
def do(self):
while self.run:
time.sleep(1/self._rate)
tstamp = time.monotonic_ns()
if self.type == 'ori':
azimuth = np.random.uniform(-np.pi, np.pi)
pitch = np.random.uniform(-np.pi/4, np.pi/4)
roll = np.random.uniform(-np.pi/4, np.pi/4)
data = np.array([azimuth, pitch, roll])
else:
data = np.array([random() - 2 , random(), random() + 2 ])
data = list(data)
with self.lock:
self.q.append(data)
self.tq.append(tstamp)
self.calc_rate(tstamp)
class Accelerometer:
def __init__(self):
self.started = False
def enable(self):
if self.started:
return
if platform == 'android':
self.acc = AccelerometerSensorListener()
if RAW_MAG:
self.ori = MagnetometerSensorListener(self.acc)
else:
self.ori = OrientationSensorListener()
else:
self.acc = Dummy(DEFAULT_ACCELEROMETER_RATE, buffer_len = ACCELEROMETER_BUFFER_LEN)
self.ori= Dummy(DEFAULT_ORIENTATION_RATE, type='ori', buffer_len=ORIENTATION_BUFFER_LEN)
self.acc.enable()
self.ori.enable()
self.started = True
def disable(self):
if not self.started:
return
self.acc.disable()
self.ori.disable()
self.started = False
sensor_manager = Accelerometer()
def get_application_dir():
if platform == 'android':
return activity.getFilesDir().getPath()
else:
return storagepath.get_application_dir()
if platform == 'android':
from notify import AndroidNotification
notification = AndroidNotification()
else:
from plyer import notification