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from xml.etree.ElementTree import ElementTree
from pixelcore.Screen import *
from pixelcore.PixelStrip import *
import pdb, sys, time, thread
from pygame.locals import *
import util.TimeOps as clock
import util.Config as configGetter
import util.ComponentRegistry as compReg
from logger import main_log
#Python class to instantiate and drive a Screen through different patterns,
#and effects.
class LightInstallation:
def __init__(self, configFileName):
main_log.info("System Initialization began based on: " + str(configFileName))
self.timer = clock.Stopwatch()
self.timer.start()
self.inputs = {} #dict of inputs and their bound behaviors, keyed by InputId
self.behaviors = {}
self.lock = thread.allocate_lock()
self.behaviorOutputs = {} #key: [list of output destinations]
self.behaviorInputs = {}
self.componentDict = {}
self.inputBehaviorRegistry = {} #inputid -> behaviors listening to that
#input
self.screen = Screen()
compReg.initRegistry()
compReg.registerComponent(self.screen, 'Screen') #TODO: move to constants file
config = configGetter.loadConfigFile(configFileName)
#read configs from xml
rendererConfig = config.find('RendererConfiguration')
pixelConfig = config.find('PixelConfiguration')
inputConfig = config.find('InputConfiguration')
behaviorConfig = config.find('BehaviorConfiguration')
mapperConfig = config.find('PixelMapperConfiguration')
installationConfig = config.find('InstallationConfiguration')
#inits
self.initializeScreen(pixelConfig)
self.initializeRenderers(rendererConfig)
self.initializeInputs(inputConfig)
self.initializeBehaviors(behaviorConfig)
self.initializeMapper(mapperConfig)
main_log.info('All components initialized')
#registration in dict
self.registerComponents(self.renderers)
self.registerComponents(self.inputs)
self.registerComponents(self.behaviors)
self.registerComponents(self.mappers)
self.configureInstallation(installationConfig)
#Done initializing. Lets start this thing!
self.timer.stop()
#main_log.info('Initialization done. Time: ', self.timer.elapsed(), 'ms')
self.mainLoop()
def configureInstallation(self, installationConfig):
defaults = configGetter.generateArgDict(installationConfig.find('Defaults'))
for defaultSelection in defaults:
componentToMap = compReg.getComponent(defaults[defaultSelection])
compReg.registerComponent(compReg.getComponent(defaults[defaultSelection]),\
'Default'+defaultSelection)
main_log.debug('Default Set: ' + defaultSelection + 'set to ' +\
defaults[defaultSelection])
def initializeMapper(self, mapperConfig):
self.mappers = self.initializeComponent(mapperConfig)
def initializeScreen(self, layoutConfig):
pixelAssemblers = self.initializeComponent(layoutConfig)
[self.addPixelStrip(l) for l in pixelAssemblers]
def addPixelStrip(self, layoutEngine):
pixelStrip = PixelStrip(layoutEngine)
self.screen.addStrip(pixelStrip)
def initializeInputs(self, inputConfig):
inputs = self.initializeComponent(inputConfig)
self.inputs = inputs
for inputClass in inputs:
inputClass.start()
self.inputBehaviorRegistry[inputClass['Id']] = []
#empty list is list of bound behaviors
def initializeRenderers(self, rendererConfig):
self.renderers = self.initializeComponent(rendererConfig)
def registerComponents(self, components):
for component in components:
cid = component['Id']
if cid == None: #TODO: determine if componenent is critical, and if so, die
main_log.error('Components must be registered with Ids. Component not registered')
else:
compReg.registerComponent(component)
main_log.debug(cid + ' registered')
def initializeComponent(self, config):
components = []
if config != None:
for configItem in config.getchildren():
try:
[module,className] = configItem.find('Class').text.split('.')
except:
main_log.error('Module must have Class element')
main_log.warn('Module without class element. Module not initialized')
continue
try:
exec('from ' + module+'.'+className + ' import *')
main_log.debug(module +'.' +className + 'imported')
except Exception as inst:
main_log.error('Error importing ' + module+'.'+'.className. Component not\
initialized.')
main_log.error(str(inst))
continue
args = configGetter.pullArgsFromItem(configItem)
args['parentScope'] = self #TODO: we shouldn't give away scope
#like this, find another way.
try:
components.append(eval(className+'(args)'))
main_log.debug(className + 'initialized with args ' + str(args))
#right
except Exception as inst:
main_log.error('Failure while initializing ' + className + ' with ' + str(args))
main_log.error(str(inst))
return components
def alive(self):
return True
def mainLoop(self):
lastLoopTime = clock.time()
refreshInterval = 30
runCount = 200
while runCount > 0:
runCount -= 1
loopStart = clock.time()
responses = self.evaluateBehaviors() #inputs are all queued when they
#happen, so we only need to run the behaviors
self.timer.start()
[self.screen.respond(response) for response in responses if
response != []]
self.screen.timeStep()
[r.render(self.screen, loopStart) for r in self.renderers]
loopElapsed = clock.time()-loopStart
sleepTime = max(0,refreshInterval-loopElapsed)
self.timer.stop()
#print self.timer.elapsed()
if sleepTime > 0:
time.sleep(sleepTime/1000)
#evaluates all the behaviors (including inter-dependencies) and returns a
#list of responses to go to the screen.
def evaluateBehaviors(self):
responses = {}
responses['Screen'] = [] #responses to the screen
for behavior in self.behaviors:
responses[behavior['Id']] = behavior.timeStep()
if behavior['RenderToScreen'] == True: #TODO: this uses extra space,
#we can use less in the future if needbe.
responses['Screen'] += responses[behavior['Id']]
return responses['Screen']
def initializeBehaviors(self, behaviorConfig):
self.behaviors = self.initializeComponent(behaviorConfig)
for behavior in self.behaviors:
self.addBehavior(behavior)
#Does work needed to add a behavior: currently -- maps behavior inputs into
#the input behavior registry.
def addBehavior(self, behavior):
for inputId in behavior.argDict['Inputs']:
if inputId in self.inputBehaviorRegistry: #it could be a behavior
self.inputBehaviorRegistry[inputId].append(behavior['Id'])
def processResponse(self,inputDict, responseDict):
inputId = inputDict['Id']
boundBehaviorIds = self.inputBehaviorRegistry[inputId]
#TODO: fix this, it crashes because inputs get run before beahviors exist
try:
[compReg.getComponent(b).addInput(responseDict) for b in boundBehaviorIds]
except:
pass
#print 'Behaviors not initialized yet. WAIT!'
def main(argv):
if len(argv) == 1:
l = LightInstallation('LightInstallationConfig.xml')
else:
l = LightInstallation(argv[1])
if __name__ == "__main__":
try:
main(sys.argv)
except KeyboardInterrupt:
main_log.info('Terminated by keyboard.')
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