def do_flip(self, block=True):
# call the flip
EventLoop.window.dispatch('on_flip')
# TODO: use sync events instead!
if block:
# draw a transparent point
# position
glVertexAttribPointer(0, 2, GL_INT, GL_FALSE, 0,
"\x00\x00\x00\x0a\x00\x00\x00\x0a")
# color
glVertexAttrib4f(3, 0.0, 0.0, 0.0, 0.0)
glDrawArrays(GL_POINTS, 0, 1)
# wait for flip then point to draw
glFinish()
# record the time immediately
self.last_flip = event_time(clock.now(), 0.0)
else:
# we didn't block, so set to predicted flip time
self.last_flip = event_time(max(self._next_flip_time, clock.now()), 0.0)
# update flip times
self._next_flip_time = self.last_flip['time'] + self.flip_interval
self._next_draw_time = self.last_flip['time'] + self.flip_interval/2.
self._did_draw = False
return self.last_flip
def do_flip(self, block=True):
# call the flip
EventLoop.window.dispatch('on_flip')
# TODO: use sync events instead!
if block:
# draw a transparent point
# position
glVertexAttribPointer(0, 2, GL_INT, GL_FALSE, 0,
"\x00\x00\x00\x0a\x00\x00\x00\x0a")
# color
glVertexAttrib4f(3, 0.0, 0.0, 0.0, 0.0)
glDrawArrays(GL_POINTS, 0, 1)
# wait for flip then point to draw
glFinish()
# record the time immediately
self.last_flip = event_time(clock.now(), 0.0)
else:
# we didn't block, so set to predicted flip time
self.last_flip = event_time(self._next_flip_time, 0.0)
# update flip times
self._next_flip_time = self.last_flip['time'] + self.flip_interval
self._next_draw_time = self.last_flip['time'] + self.flip_interval / 2.
self._did_draw = False
return self.last_flip
def __init__(self, exp=None):
super(SmileApp, self).__init__()
self.exp = exp
self.callbacks = {}
self.pending_flip_time = None
self.video_queue = []
self.force_blocking_flip = False
self.force_nonblocking_flip = False
self.flip_interval = 1 / 60. # default to 60 Hz
# set event_time stuff
self.event_time = event_time(0., 0.)
self.dispatch_input_event_time = event_time(0., 0.)
# make Window avail to exp
self._Window = Window
def __init__(self, exp=None):
super(SmileApp, self).__init__()
self.exp = exp
self.callbacks = {}
self.pending_flip_time = None
self.video_queue = []
self.force_blocking_flip = False
self.force_nonblocking_flip = False
self.flip_interval = 1/60. # default to 60 Hz
# set event_time stuff
self.event_time = event_time(0., 0.)
self.dispatch_input_event_time = event_time(0., 0.)
# make Window avail to exp
self._Window = Window
def _pulse_off_callback(self):
self._task.write([0.0])
ev = clock.now()
# set the pulse time
self._pulse_off = event_time(ev, 0.0)
# let's schedule finalizing
self._ended = True
clock.schedule(self.finalize)
def __init__(self):
# set up the values of interest and their refs
self._width = 0.0
self._width_ref = Ref.getattr(self, "_width")
self._height = 0.0
self._height_ref = Ref.getattr(self, "_height")
self._last_flip = event_time(0.0, 0.0)
self._last_flip_ref = Ref.getattr(self, "_last_flip")
self._mouse_pos = (0, 0)
self._mouse_pos_ref = Ref.getattr(self, "_mouse_pos")
self._mouse_button = None
self._mouse_button_ref = Ref.getattr(self, "_mouse_button")
self._keys_down = set()
self._issued_key_refs = weakref.WeakValueDictionary()
def __init__(self):
# set up the values of interest and their refs
self._width = 0.0
self._width_ref = Ref.getattr(self, "_width")
self._height = 0.0
self._height_ref = Ref.getattr(self, "_height")
self._last_flip = event_time(0.0, 0.0)
self._last_flip_ref = Ref.getattr(self, "_last_flip")
self._mouse_pos = (0, 0)
self._mouse_pos_ref = Ref.getattr(self, "_mouse_pos")
self._mouse_button = None
self._mouse_button_ref = Ref.getattr(self, "_mouse_button")
self._keys_down = set()
self._issued_key_refs = weakref.WeakValueDictionary()
def _pulse_off_callback(self):
# turn off the code
if self._sync_style == "parallel":
start_time = clock.now()
self._sport.setData(0)
end_time = clock.now()
else:
start_time = clock.now()
self._sport.setData("0")
end_time = clock.now()
# clean up / close the port
self._sport = None
# set the pulse time
time_err = (end_time - start_time)/2.
self._pulse_off = event_time(start_time+time_err,
time_err)
# let's schedule finalizing
self._ended = True
clock.schedule(self.finalize)
def _callback(self):
# we've started
self._started = True
# push it outlet
global _got_nidaqmx
if _got_nidaqmx:
if type(self._push_vals == list):
self._task.write(self._push_vals)
else:
self._task.write([self.push_vals])
ev = clock.now()
else:
self._pulse_on = None
self._pulse_off = None
self._ended = True
clock.schedule(self.leave)
clock.schedule(self.finalize)
return
# set the pulse time
self._pulse_on = event_time(ev, 0.0)
# schedule leaving (as soon as this method is done)
clock.schedule(self.leave)
# schedule the off time
if self._width > 0.0:
# we're gonna turn off ourselves
clock.schedule(self._pulse_off_callback,
event_time=self._pulse_on['time'] + self._width)
else:
# we're gonna leave it
self._pulse_off = None
# so we can finalize now, too
clock.schedule(self.finalize)
self._ended = True
def _idle_callback(self, event_loop):
# record the time range
self._new_time = clock.now()
# call any of our scheduled events that are ready
clock.tick()
# dispatch input events
time_err = (clock.now() - self._post_dispatch_time) / 2.0
self.dispatch_input_event_time = event_time(
self._post_dispatch_time + time_err, time_err)
event_loop.dispatch_input()
self._post_dispatch_time = clock.now()
# processing video and drawing can only happen if we have
# not already drawn
if not self._did_draw:
# prepare for every video to be drawn on the next flip
for video in self.video_queue:
# the desired video time must be after the previous flip
# is done, so making sure the next_flip_time is after
# ensures this is the case
if (video.flip_time - self._next_flip_time) < 0.0:
if (not video.drawn and
((self.pending_flip_time is None and self._new_time >=
(video.flip_time - (self.flip_interval / 2.0)))
or video.flip_time == self.pending_flip_time)):
# prepare that video change
video.update_cb()
# it will be drawn
video.drawn = True
# save the pending time so all other changes
# for that time will also run
self.pending_flip_time = video.flip_time
else:
# either none are ready or the remaining are
# for a subsequent flip
break
else:
break
# do kivy ticks and draw when we're ready
# happens at half the flip interval since last flip
if clock.now() >= self._next_draw_time:
# tick the kivy clock
_kivy_clock.tick()
# sync Builder and call tick_draw to prepare to draw
Builder.sync()
_kivy_clock.tick_draw()
Builder.sync()
EventLoop.window.dispatch('on_draw')
# process smile video callbacks for the upcoming flip
self._flip_time_callbacks = []
for video in self.video_queue:
if video.drawn and video.flip_time == self.pending_flip_time:
# append the flip time callback
if video.flip_time_cb is not None:
self._flip_time_callbacks.append(
video.flip_time_cb)
# mark that video as flipped (it's gonna be)
video.flipped = True
else:
# no more of the videos could match, so break
break
# remove any video change that's gonna be flipped
while len(self.video_queue) and self.video_queue[0].flipped:
del self.video_queue[0]
# we've drawn the one time we can this frame
self._did_draw = True
# do a flip when we're ready
# must have completed draw (this will ensure we don't do double flips
# inside the FLIP_TIME_MARGIN b/c did_draw will be reset to False upon
# the flip
if self._did_draw and \
clock.now() >= self._next_flip_time-FLIP_TIME_MARGIN:
# test if blocking or non-blocking flip
# do a blocking if:
# 1) Forcing a blocking flip_interval
# OR
# 2) We have a specific flip callback request and we
# are not forcing a non-blocking flip
if self.force_blocking_flip or \
(len(self._flip_time_callbacks) and
not self.force_nonblocking_flip):
# do a blocking flip
self.do_flip(block=True)
else:
# do a non-blocking flip
self.do_flip(block=False)
# still may need to update flip_time_callbacks
# even though they may be wrong for non-blocking flips
for cb in self._flip_time_callbacks:
cb(self.last_flip)
# tell refs that last_flip updated
self.exp._screen._set_last_flip(self.last_flip)
# reset for next flip
self.pending_flip_time = None
# exit if experiment done
if not self.exp._root_executor._active:
if self.exp._root_executor._enter_time:
# stop if we're not active, but we have an enter time
self.stop()
# give time to other threads
clock.usleep(IDLE_USLEEP)
# save the time
self._last_time = clock.now()
time_err = (self._last_time - self._new_time) / 2.0
self.event_time = event_time(self._new_time + time_err, time_err)
def _callback(self):
# we've started
self._started = True
# Pull in the global variables
global PI
global SI
if PI or SI:
# send the port code and time it
try:
if self._sync_style == "parallel":
# Create a parallel port object
# from the global variable (locks it exclusively)
self._sport = PI(address=self._port)
start_time = clock.now()
self._sport.setData(self._code_num)
end_time = clock.now()
elif self._sync_style == "serial":
self._sport = SI(address=self._port)
start_time = clock.now()
self._sport.setData(self._code_num)
end_time = clock.now()
except: # eventually figure out which errors to catch
sys.stderr.write("\nWARNING: The sync module could not send pulses,\n" +
"\tso no sync pulsing will be generated.\n\n")
PI = None
self._pport = None
self._pulse_on = None
self._pulse_off = None
self._ended = True
clock.schedule(self.leave)
clock.schedule(self.finalize)
return
# set the pulse time
time_err = (end_time - start_time)/2.
self._pulse_on = event_time(start_time+time_err,
time_err)
# schedule leaving (as soon as this method is done)
clock.schedule(self.leave)
# schedule the off time
if self._width > 0.0:
# we're gonna turn off ourselves
clock.schedule(self._pulse_off_callback,
event_time=self._pulse_on['time']+self._width)
else:
# we're gonna leave it
self._pulse_off = None
# clean up/ close the port
self._sport = None
# so we can finalize now, too
clock.schedule(self.finalize)
self._ended = True
else:
# we can leave and finalize now
self._pulse_on = None
self._pulse_off = None
self._ended = True
clock.schedule(self.leave)
clock.schedule(self.finalize)
def _idle_callback(self, event_loop):
# record the time range
self._new_time = clock.now()
# call any of our scheduled events that are ready
clock.tick()
# dispatch input events
time_err = (clock.now() - self._post_dispatch_time) / 2.0
self.dispatch_input_event_time = event_time(self._post_dispatch_time +
time_err, time_err)
event_loop.dispatch_input()
self._post_dispatch_time = clock.now()
# processing video and drawing can only happen if we have
# not already drawn
if not self._did_draw:
# prepare for every video to be drawn on the next flip
for video in self.video_queue:
# the desired video time must be after the previous flip
# is done, so making sure the next_flip_time is after
# ensures this is the case
if (video.flip_time - self._next_flip_time) < 0.0:
if (not video.drawn and
((self.pending_flip_time is None and
self._new_time >= (video.flip_time -
(self.flip_interval / 2.0))) or
video.flip_time == self.pending_flip_time)):
# prepare that video change
video.update_cb()
# it will be drawn
video.drawn = True
# save the pending time so all other changes
# for that time will also run
self.pending_flip_time = video.flip_time
else:
# either none are ready or the remaining are
# for a subsequent flip
break
else:
break
# do kivy ticks and draw when we're ready
# happens at half the flip interval since last flip
if clock.now() >= self._next_draw_time:
# tick the kivy clock
_kivy_clock.tick()
# sync Builder and call tick_draw to prepare to draw
Builder.sync()
_kivy_clock.tick_draw()
Builder.sync()
EventLoop.window.dispatch('on_draw')
# process smile video callbacks for the upcoming flip
self._flip_time_callbacks = []
for video in self.video_queue:
if video.drawn and video.flip_time == self.pending_flip_time:
# append the flip time callback
if video.flip_time_cb is not None:
self._flip_time_callbacks.append(video.flip_time_cb)
# mark that video as flipped (it's gonna be)
video.flipped = True
else:
# no more of the videos could match, so break
break
# remove any video change that's gonna be flipped
while len(self.video_queue) and self.video_queue[0].flipped:
del self.video_queue[0]
# we've drawn the one time we can this frame
self._did_draw = True
# do a flip when we're ready
# must have completed draw (this will ensure we don't do double flips
# inside the FLIP_TIME_MARGIN b/c did_draw will be reset to False upon
# the flip
if self._did_draw and \
clock.now() >= self._next_flip_time-FLIP_TIME_MARGIN:
# test if blocking or non-blocking flip
# do a blocking if:
# 1) Forcing a blocking flip_interval
# OR
# 2) We have a specific flip callback request and we
# are not forcing a non-blocking flip
if self.force_blocking_flip or \
(len(self._flip_time_callbacks) and
not self.force_nonblocking_flip):
# do a blocking flip
self.do_flip(block=True)
else:
# do a non-blocking flip
self.do_flip(block=False)
# still may need to update flip_time_callbacks
# even though they may be wrong for non-blocking flips
for cb in self._flip_time_callbacks:
cb(self.last_flip)
# tell refs that last_flip updated
self.exp._screen._set_last_flip(self.last_flip)
# reset for next flip
self.pending_flip_time = None
# exit if experiment done
if not self.exp._root_executor._active:
if self.exp._root_executor._enter_time:
# stop if we're not active, but we have an enter time
self.stop()
# give time to other threads
clock.usleep(IDLE_USLEEP)
# save the time
self._last_time = clock.now()
time_err = (self._last_time - self._new_time) / 2.0
self.event_time = event_time(self._new_time + time_err, time_err)
