444 lines
17 KiB
Python
444 lines
17 KiB
Python
# Fenrir TTY screen reader
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# By Chrys, Storm Dragon, and contributers.
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_evdevAvailable = False
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_udevAvailable = False
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_evdevAvailableError = ''
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_udevAvailableError = ''
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try:
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import evdev
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from evdev import InputDevice, UInput, ecodes as e
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_evdevAvailable = True
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except Exception as e:
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_evdevAvailableError = str(e)
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try:
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import pyudev
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_udevAvailable = True
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except Exception as e:
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_udevAvailableError = str(e)
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import time
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from select import select
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import multiprocessing
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from multiprocessing.sharedctypes import Value
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from ctypes import c_bool
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from fenrirscreenreader.core.eventData import fenrirEventType
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from fenrirscreenreader.core import inputData
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from fenrirscreenreader.core import debug
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from fenrirscreenreader.core.inputDriver import inputDriver
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class driver(inputDriver):
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def __init__(self):
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inputDriver.__init__(self)
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self._manager = multiprocessing.Manager()
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self.iDevices = {}
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self.iDevicesFD = self._manager.list()
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self.uDevices = {}
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self.gDevices = {}
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self.iDeviceNo = 0
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self.watchDog = Value(c_bool, True)
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self.UInputinject = UInput()
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def initialize(self, environment):
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self.env = environment
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self.env['runtime']['inputManager'].setShortcutType('KEY')
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global _evdevAvailable
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global _udevAvailable
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global _evdevAvailableError
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global _udevAvailableError
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if not _udevAvailable:
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self.env['runtime']['debug'].writeDebugOut('InputDriver:' + _udevAvailableError, debug.debugLevel.ERROR)
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if not _evdevAvailable:
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self.env['runtime']['debug'].writeDebugOut('InputDriver:' + _evdevAvailableError, debug.debugLevel.ERROR)
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return
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if _udevAvailable:
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self.env['runtime']['processManager'].addCustomEventThread(self.plugInputDeviceWatchdogUdev)
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self.env['runtime']['processManager'].addCustomEventThread(self.inputWatchdog)
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self._initialized = True
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def plugInputDeviceWatchdogUdev(self,active , eventQueue):
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context = pyudev.Context()
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monitor = pyudev.Monitor.from_netlink(context)
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monitor.filter_by(subsystem='input')
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monitor.start()
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ignorePlug = False
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while active.value:
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validDevices = []
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device = monitor.poll(1)
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while device:
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self.env['runtime']['debug'].writeDebugOut('plugInputDeviceWatchdogUdev:' + str(device), debug.debugLevel.INFO)
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try:
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if currDevice.name.upper() in ['','SPEAKUP','FENRIR-UINPUT']:
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ignorePlug = True
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if currDevice.phys.upper() in ['','SPEAKUP']:
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ignorePlug = True
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if 'BRLTTY' in currDevice.name.upper():
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ignorePlug = True
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if not ignorePlug:
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virtual = '/sys/devices/virtual/input/' in device.sys_path
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if device.device_node:
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validDevices.append({'device': device.device_node, 'virtual': virtual})
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except:
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pass
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try:
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pollTimeout = 1
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device = monitor.poll(pollTimeout)
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except:
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device = None
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ignorePlug = False
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if validDevices:
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eventQueue.put({"Type":fenrirEventType.PlugInputDevice,"Data":validDevices})
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return time.time()
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def inputWatchdog(self,active , eventQueue):
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try:
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while active.value:
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r, w, x = select(self.iDevices, [], [], 0.8)
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event = None
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foundKeyInSequence = False
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foreward = False
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eventFired = False
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for fd in r:
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try:
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event = self.iDevices[fd].read_one()
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except:
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self.removeDevice(fd)
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while(event):
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self.env['runtime']['debug'].writeDebugOut('inputWatchdog: EVENT:' + str(event), debug.debugLevel.INFO)
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self.env['input']['eventBuffer'].append( [self.iDevices[fd], self.uDevices[fd], event])
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if event.type == evdev.events.EV_KEY:
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if not foundKeyInSequence:
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foundKeyInSequence = True
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if event.code != 0:
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currMapEvent = self.mapEvent(event)
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if not currMapEvent:
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event = self.iDevices[fd].read_one()
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continue
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if not isinstance(currMapEvent['EventName'], str):
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event = self.iDevices[fd].read_one()
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continue
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if currMapEvent['EventState'] in [0,1,2]:
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eventQueue.put({"Type":fenrirEventType.KeyboardInput,"Data":currMapEvent.copy()})
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eventFired = True
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else:
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if event.type in [2,3]:
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foreward = True
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event = self.iDevices[fd].read_one()
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if not foundKeyInSequence:
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if foreward and not eventFired:
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self.writeEventBuffer()
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self.clearEventBuffer()
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except Exception as e:
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self.env['runtime']['debug'].writeDebugOut("INPUT WATCHDOG CRASH: "+str(e),debug.debugLevel.ERROR)
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def writeEventBuffer(self):
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if not self._initialized:
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return
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for iDevice, uDevice, event in self.env['input']['eventBuffer']:
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try:
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if uDevice:
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if self.gDevices[iDevice.fd]:
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self.writeUInput(uDevice, event)
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except Exception as e:
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pass
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def writeUInput(self, uDevice, event):
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if not self._initialized:
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return
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uDevice.write_event(event)
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uDevice.syn()
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def updateInputDevices(self, newDevices = None, init = False):
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if init:
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self.removeAllDevices()
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deviceFileList = None
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if newDevices and not init:
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if not isinstance(newDevices, list):
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newDevices = [newDevices]
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deviceFileList = newDevices
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else:
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deviceFileList = evdev.list_devices()
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if len(deviceFileList) == self.iDeviceNo:
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return
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if not deviceFileList:
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return
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mode = self.env['runtime']['settingsManager'].getSetting('keyboard', 'device').upper()
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iDevicesFiles = []
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for device in self.iDevices:
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iDevicesFiles.append(self.iDevices[device].fn)
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eventType = evdev.events
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for deviceFile in deviceFileList:
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try:
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if not deviceFile:
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continue
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if deviceFile == '':
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continue
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if deviceFile in iDevicesFiles:
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continue
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try:
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with open(deviceFile) as f:
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pass
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except Exception as e:
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continue
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# 3 pos absolute
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# 2 pos relative
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# 1 Keys
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try:
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currDevice = evdev.InputDevice(deviceFile)
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except:
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continue
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try:
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if currDevice.name.upper() in ['','SPEAKUP','FENRIR-UINPUT']:
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continue
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if currDevice.phys.upper() in ['','SPEAKUP']:
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continue
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if 'BRLTTY' in currDevice.name.upper():
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continue
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except:
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pass
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cap = currDevice.capabilities()
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if mode in ['ALL','NOMICE']:
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if eventType.EV_KEY in cap:
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if 116 in cap[eventType.EV_KEY] and len(cap[eventType.EV_KEY]) < 10:
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self.env['runtime']['debug'].writeDebugOut('Device Skipped (has 116):' + currDevice.name,debug.debugLevel.INFO)
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continue
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if len(cap[eventType.EV_KEY]) < 60:
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self.env['runtime']['debug'].writeDebugOut('Device Skipped (< 60 keys):' + currDevice.name,debug.debugLevel.INFO)
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continue
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if mode == 'ALL':
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self.addDevice(currDevice)
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self.env['runtime']['debug'].writeDebugOut('Device added (ALL):' + self.iDevices[currDevice.fd].name, debug.debugLevel.INFO)
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elif mode == 'NOMICE':
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if not ((eventType.EV_REL in cap) or (eventType.EV_ABS in cap)):
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self.addDevice(currDevice)
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self.env['runtime']['debug'].writeDebugOut('Device added (NOMICE):' + self.iDevices[currDevice.fd].name,debug.debugLevel.INFO)
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else:
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self.env['runtime']['debug'].writeDebugOut('Device Skipped (NOMICE):' + currDevice.name,debug.debugLevel.INFO)
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else:
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self.env['runtime']['debug'].writeDebugOut('Device Skipped (no EV_KEY):' + currDevice.name,debug.debugLevel.INFO)
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elif currDevice.name.upper() in mode.split(','):
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self.addDevice(currDevice)
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self.env['runtime']['debug'].writeDebugOut('Device added (Name):' + self.iDevices[currDevice.fd].name,debug.debugLevel.INFO)
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except Exception as e:
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self.env['runtime']['debug'].writeDebugOut("Device Skipped (Exception): " + deviceFile +' ' + currDevice.name +' '+ str(e),debug.debugLevel.INFO)
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self.iDeviceNo = len(evdev.list_devices())
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self.updateMPiDevicesFD()
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def updateMPiDevicesFD(self):
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try:
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for fd in self.iDevices:
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if not fd in self.iDevicesFD:
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self.iDevicesFD.append(fd)
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for fd in self.iDevicesFD:
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if not fd in self.iDevices:
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self.iDevicesFD.remove(fd)
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except:
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pass
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def mapEvent(self, event):
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if not self._initialized:
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return None
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if not event:
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return None
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mEvent = inputData.inputEvent
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try:
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# mute is a list = ['KEY_MIN_INTERESTING', 'KEY_MUTE']
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mEvent['EventName'] = evdev.ecodes.keys[event.code]
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if isinstance(mEvent['EventName'], list):
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if len(mEvent['EventName']) > 0:
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mEvent['EventName'] = mEvent['EventName'][0]
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if isinstance(mEvent['EventName'], list):
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if len(mEvent['EventName']) > 0:
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mEvent['EventName'] = mEvent['EventName'][0]
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mEvent['EventValue'] = event.code
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mEvent['EventSec'] = event.sec
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mEvent['EventUsec'] = event.usec
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mEvent['EventState'] = event.value
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mEvent['EventType'] = event.type
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return mEvent
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except Exception as e:
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return None
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def getLedState(self, led = 0):
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if not self.hasIDevices():
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return False
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# 0 = Numlock
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# 1 = Capslock
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# 2 = Rollen
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for fd, dev in self.iDevices.items():
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if led in dev.leds():
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return True
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return False
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def toggleLedState(self, led = 0):
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if not self.hasIDevices():
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return False
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ledState = self.getLedState(led)
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for i in self.iDevices:
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if self.gDevices[i]:
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# 17 LEDs
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if 17 in self.iDevices[i].capabilities():
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if ledState == 1:
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self.iDevices[i].set_led(led , 0)
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else:
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self.iDevices[i].set_led(led , 1)
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def grabAllDevices(self):
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if not self._initialized:
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return True
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ok = True
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for fd in self.iDevices:
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if not self.gDevices[fd]:
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ok = ok and self.grabDevice(fd)
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return ok
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def ungrabAllDevices(self):
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if not self._initialized:
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return True
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ok = True
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for fd in self.iDevices:
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if self.gDevices[fd]:
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ok = ok and self.ungrabDevice(fd)
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return ok
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def createUInputDev(self, fd):
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if not self.env['runtime']['settingsManager'].getSettingAsBool('keyboard', 'grabDevices'):
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self.uDevices[fd] = None
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return
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try:
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test = self.uDevices[fd]
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return
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except KeyError:
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self.uDevices[fd] = None
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if self.uDevices[fd] != None:
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return
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try:
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self.uDevices[fd] = UInput.from_device(self.iDevices[fd], name='fenrir-uinput')
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except Exception as e:
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try:
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print(e)
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self.env['runtime']['debug'].writeDebugOut('InputDriver evdev: compat fallback: ' + str(e),debug.debugLevel.WARNING)
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dev = self.iDevices[fd]
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cap = dev.capabilities()
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del cap[0]
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self.uDevices[fd] = UInput(
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cap,
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'fenrir-uinput',
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)
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except Exception as e:
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self.env['runtime']['debug'].writeDebugOut('InputDriver evdev: init Uinput not possible: ' + str(e),debug.debugLevel.ERROR)
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return
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def addDevice(self, newDevice):
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self.env['runtime']['debug'].writeDebugOut('InputDriver evdev: device added: ' + str(newDevice.fd) + ' ' +str(newDevice),debug.debugLevel.INFO)
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try:
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self.iDevices[newDevice.fd] = newDevice
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self.createUInputDev(newDevice.fd)
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self.gDevices[newDevice.fd] = False
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except:
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# if it doesnt work clean up
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try:
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del(self.iDevices[newDevice.fd])
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except:
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pass
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try:
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del(self.uDevices[newDevice.fd])
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except:
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pass
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try:
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del(self.gDevices[newDevice.fd])
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except:
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pass
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def grabDevice(self, fd):
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if not self.env['runtime']['settingsManager'].getSettingAsBool('keyboard', 'grabDevices'):
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return True
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try:
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print(self.iDevices[fd])
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self.iDevices[fd].grab()
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self.gDevices[fd] = True
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self.env['runtime']['debug'].writeDebugOut('InputDriver evdev: grab device ('+ str(self.iDevices[fd].name) + ')',debug.debugLevel.INFO)
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except IOError:
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if not self.gDevices[fd]:
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return False
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# self.gDevices[fd] = True
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# #self.removeDevice(fd)
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except Exception as e:
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self.env['runtime']['debug'].writeDebugOut('InputDriver evdev: grabing not possible: ' + str(e),debug.debugLevel.ERROR)
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return False
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return True
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def ungrabDevice(self,fd):
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if not self.env['runtime']['settingsManager'].getSettingAsBool('keyboard', 'grabDevices'):
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return True
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try:
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self.iDevices[fd].ungrab()
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self.gDevices[fd] = False
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self.env['runtime']['debug'].writeDebugOut('InputDriver evdev: ungrab device ('+ str(self.iDevices[fd].name) + ')',debug.debugLevel.INFO)
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except IOError:
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if self.gDevices[fd]:
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return False
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# self.gDevices[fd] = False
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# #self.removeDevice(fd)
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except Exception as e:
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return False
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return True
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def removeDevice(self,fd):
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self.env['runtime']['debug'].writeDebugOut('InputDriver evdev: device removed: ' + str(fd) + ' ' +str(self.iDevices[fd]),debug.debugLevel.INFO)
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self.clearEventBuffer()
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try:
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self.ungrabDevice(fd)
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except:
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pass
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try:
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self.iDevices[fd].close()
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except:
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pass
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try:
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self.uDevices[fd].close()
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except:
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pass
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try:
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del(self.iDevices[fd])
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except:
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pass
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try:
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del(self.uDevices[fd])
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except:
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pass
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try:
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del(self.gDevices[fd])
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except:
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pass
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self.updateMPiDevicesFD()
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def hasIDevices(self):
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if not self._initialized:
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return False
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if not self.iDevices:
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return False
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if len(self.iDevices) == 0:
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return False
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return True
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def sendKey(self, key, state):
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if not self._initialized:
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return
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try:
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self.UInputinject.write(e.EV_KEY, e.ecodes[key], state)
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self.UInputinject.syn()
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except:
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pass
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def removeAllDevices(self):
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if not self.hasIDevices():
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return
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devices = self.iDevices.copy()
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for fd in devices:
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self.removeDevice(fd)
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self.iDevices.clear()
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self.uDevices.clear()
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self.gDevices.clear()
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self.iDeviceNo = 0
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