hi 
,
i need some help, I have a problem with my code
the goal is to play some videos and track eye’s motion at the same time.
(I am new in python and eyelink so maybe it’s a basic error I don’t know)
my code
###To set up connection with Eyelink II computer:
### ip link set enp4s0 up
### ip addr add 100.1.1.2/24 dev enp4s0
from __future__ import division
import psychopy
from psychopy import visual, core, event
import time
import pylink as pl
import sys, os
import pygame
from pyglet.window import key
win = visual.Window(size=(800, 600))
keyState = key.KeyStateHandler()
win.winHandle.push_handlers(keyState)
print('win ok')
path = ''
globalClock = core.Clock()
def playvid(video):
print('enter playvid')
mov = visual.MovieStim(win, video)
print('orig movie size=%s' % mov.size)
print('duration=%.2fs' % mov.duration)
start = globalClock.getTime()
el.sendMessage("TRIALID " + str(subjname))
el.startRecording(1, 1, 1, 1)
print 'start recording'
temps = globalClock.getTime() - start
print temps
while globalClock.getTime() - start <= mov.duration:
temps = globalClock.getTime() - start
print temps
mov.draw()
win.flip() # modif
if event.getKeys(keyList=['s']):
print "exit loop"
break
print "end while"
el.sendMessage("END")
el.stopRecording()
win.flip()
print "videok"
def eyeTrkInit(sp): # sp=size
el = pl.EyeLink()
print('initok')
el.sendCommand("screen_pixel_coords = 0 0 %d %d" % sp)
el.sendMessage("DISPLAY_COORDS 0 0 %d %d" % sp)
el.sendCommand("select_parser_configuration 0")
el.sendCommand("scene_camera_gazemap = NO")
el.sendCommand("pupil_size_diameter = %s" % ("YES"))
return (el)
def eyeTrkCalib(el, w, h, border, ntar, sp): # cd=color dept
print ('calibok')
pl.openGraphics(sp, cd)
print( el.eyeAvailable() ) # determine which eye(s) are available 1 RIGHT 0 LEFT
el.sendCommand("button_function 5 'accept_target_fixation'");
pl.setCalibrationColors((255, 255, 255), (0, 0, 0))
pl.setTargetSize(int(sp[0] / 70), int(sp[1] / 300))
pl.setCalibrationSounds("", "", "")
pl.setDriftCorrectSounds("", "off", "off")
el.doTrackerSetup()
pl.closeGraphics()
# # el.setOfflineMode()
def eyeTrkOpenEDF(dfn, el):
el.openDataFile(dfn + '.EDF')
def eyeTrkCloseEDF(dfn, el):
el.closeDataFile()
def driftCor(el, sp, cd):
blockLabel = psychopy.visual.TextStim(win, text="Press the space bar to begin drift correction", pos=[0, 0], color="white", bold=True, alignHoriz="center", height=0.1)
notdone = True
while notdone:
blockLabel.draw()
win.flip()
if keyState[key.SPACE] == True:
eyeTrkCalib(el, w, h, border, ntar, sp)
win.winHandle.activate()
keyState[key.SPACE] = False
notdone = False
print ('fincal')
sp = (800, 600)
w = 800
h = 600
cd = 32
border = 100
ntar = 9
subjname = '060617'
el = eyeTrkInit(sp) #ini eyetrack
eyeTrkOpenEDF(subjname, el) #ouverture du fichier edf
eyeTrkCalib(el, w, h, border, ntar, sp) #calib
cpt = 0 # compteur drift
for f in ['Sample.mpg', 'small.mp4', 'jwpIntro.mov']: #boucle video
pth = path + f
print('debutvide')
playvid(pth)
cpt = cpt + 1
print('finvide')
if cpt < 2:
driftCor(el, sp, cd)
el.setOfflineMode();
pl.closeGraphics()
eyeTrkCloseEDF(subjname, el)
edfFileName = subjname + ".EDF"
el.receiveDataFile(edfFileName, edfFileName)
el.close();
os.rename(edfFileName, subjname + '_mix.edf')
###error:
Exception in thread Thread-2:
Traceback (most recent call last):
File "C:\Program Files\PsychoPy2\lib\threading.py", line 801, in __bootstrap_inner
self.run()
File "C:\Program Files\PsychoPy2\lib\threading.py", line 754, in run
self.__target(*self.__args, **self.__kwargs)
File "C:\Program Files\PsychoPy2\lib\site-packages\pyglet\media\__init__.py", line 145, in _thread_run
self.run()
File "C:\Program Files\PsychoPy2\lib\site-packages\pyglet\media\drivers\directsound\__init__.py", line 61, in run for player in self.players:
RuntimeError: Set changed size during iteration
thanks for your helpp! 
karine
