def do_expose_event(self, event, widget):
"""Handle exposure event (trigger redraw by gst)"""
log.info("Expose event: %s", event)
from olpcgames import eventwrap
eventwrap.post(eventwrap.Event(eventwrap.pygame.VIDEOEXPOSE))
return True
def addBuddy(self, handle, buddy):
"""Add a new buddy to internal structures
Note: this is called in the GObject thread!
"""
try:
current = self._buddies.get(handle)
if current is False:
self.removeBuddy(handle)
return # we left before we got our metadata
text = textsprite.TextSprite(
text=buddy.props.nick,
color=(255, 255, 255),
size=11,
)
self._buddies[handle] = (buddy, text)
for group in self.groups:
group.add(text)
#log.info( '''Created text for buddy: %s (%s)''', buddy.props.nick, handle )
# send event to trigger a rendering/processing cycle...
eventwrap.post(eventwrap.Event(
pygame.USEREVENT,
code=1,
))
#log.debug( 'Sent user event' )
except Exception, err:
log.error("""Failure setting up buddy %s: %s""", buddy,
get_traceback(err))
def write_file( self, file_path ):
"""Handle request to write to the given file on the Pygame side
This is rather complicated by the need to have the file complete by the
time the function returns. Very poor API, after all, if I have to write a
multi-hundred-megabyte file it might take many minutes to complete
writing.
"""
log.info( 'write_file: %s %s', file_path, self.metadata )
if os.path.exists( file_path ):
self.read_file( file_path )
import olpcgames, pygame
from olpcgames import eventwrap
event = eventwrap.Event(
type = pygame.USEREVENT,
code = olpcgames.FILE_WRITE_REQUEST,
filename = file_path,
metadata = self.metadata,
)
eventwrap.post( event )
event.block()
if not os.path.exists( file_path ):
log.warn( '''No file created in %r''', file_path )
raise NotImplementedError( """Pygame Activity code did not produce a file for %s"""%( file_path, ))
else:
log.info( '''Stored file in %r''', file_path )
def _post(self, evt):
try:
eventwrap.post(evt)
except pygame.error, e:
if str(e) == "Event queue full":
print "Event queue full!"
pass
else:
raise e
def _post(self, evt):
try:
eventwrap.post(evt)
except pygame.error, e:
if str(e) == 'Event queue full':
print "Event queue full!"
pass
else:
raise e
def _background_snap(
self,
token = None,
):
"""Process gst messages until pipe is finished
pipe -- gstreamer pipe definition for parse_launch, normally it will
produce a file into which the camera should store an image
We consider pipe to be finished when we have had two "state changed"
gstreamer events where the pending state is VOID, the first for when
we begin playing, the second for when we finish.
"""
log.debug( 'Background thread kicking off gstreamer capture begun' )
from olpcgames import eventwrap
from pygame.event import Event
filename, pipe = self._create_pipe()
bus = pipe.get_bus()
bus.add_signal_watch()
def _background_snap_onmessage( bus, message ):
"""Handle messages from the picture-snapping bus"""
log.debug( 'Message handler for gst messages: %s', message )
t = message.type
if t == gst.MESSAGE_EOS:
pipe.set_state(gst.STATE_NULL)
try:
image = self._load_and_clean( filename )
success = True
except Exception, err:
success = False
image = None
else:
err = None
log.debug( 'Success loading file %r', token )
eventwrap.post(Event(
CAMERA_LOAD,
filename=filename,
success = success,
token = token,
image=image,
err=err
))
elif t == gst.MESSAGE_ERROR:
log.warn( 'Failure loading file %r: %s', token, message )
pipe.set_state(gst.STATE_NULL)
err, debug = message.parse_error()
eventwrap.post(Event(
CAMERA_LOAD_FAIL,
filename=filename,
success = False,
token = token,
image=None,
err=err
))
return False
def _background_snap(
self,
token=None,
):
"""Process gst messages until pipe is finished
pipe -- gstreamer pipe definition for parse_launch, normally it will
produce a file into which the camera should store an image
We consider pipe to be finished when we have had two "state changed"
gstreamer events where the pending state is VOID, the first for when
we begin playing, the second for when we finish.
"""
log.debug('Background thread kicking off gstreamer capture begun')
from olpcgames import eventwrap
from pygame.event import Event
filename, pipe = self._create_pipe()
bus = pipe.get_bus()
bus.add_signal_watch()
def _background_snap_onmessage(bus, message):
"""Handle messages from the picture-snapping bus"""
log.debug('Message handler for gst messages: %s', message)
t = message.type
if t == gst.MESSAGE_EOS:
pipe.set_state(gst.STATE_NULL)
try:
image = self._load_and_clean(filename)
success = True
except Exception, err:
success = False
image = None
else:
err = None
log.debug('Success loading file %r', token)
eventwrap.post(
Event(CAMERA_LOAD,
filename=filename,
success=success,
token=token,
image=image,
err=err))
elif t == gst.MESSAGE_ERROR:
log.warn('Failure loading file %r: %s', token, message)
pipe.set_state(gst.STATE_NULL)
err, debug = message.parse_error()
eventwrap.post(
Event(CAMERA_LOAD_FAIL,
filename=filename,
success=False,
token=token,
image=None,
err=err))
return False
def __call__(self, *args, **named):
"""PyGTK-side callback operation"""
log.info('Callback %s return value *%s, **%s', self.callable, args,
named)
from olpcgames import eventwrap
args = [wrap(a) for a in args]
named = dict([(k, wrap(v)) for k, v in named.items()])
eventwrap.post(
eventwrap.CallbackResult(self.callable,
args,
named,
callContext=self.callContext))
def __call__( self, *args, **named ):
"""PyGTK-side callback operation"""
log.info( 'Callback %s return value *%s, **%s', self.callable, args, named )
from olpcgames import eventwrap
args = [wrap(a) for a in args]
named = dict([
(k,wrap(v)) for k,v in named.items()
])
eventwrap.post(
eventwrap.CallbackResult(
self.callable, args, named, callContext = self.callContext
)
)
def read_file(self, file_path):
"""Handle request to read the given file on the Pygame side
This is complicated rather noticeably by the silly semantics of the Journal
where it unlinks the file as soon as this method returns. We either have to
handle the file-opening in PyGTK (not acceptable), block this thread until
the Pygame thread handles the event (which it may never do) or we have
to make the silly thing use a non-standard file-opening interface.
"""
log.info( 'read_file: %s %s', file_path, self.metadata )
import olpcgames, pygame
from olpcgames import eventwrap
event = eventwrap.Event(
type = pygame.USEREVENT,
code = olpcgames.FILE_READ_REQUEST,
filename = file_path,
metadata = self.metadata,
)
eventwrap.post( event )
event.block()
def _background_snap_onmessage(bus, message):
"""Handle messages from the picture-snapping bus"""
log.debug('Message handler for gst messages: %s', message)
t = message.type
if t == gst.MESSAGE_EOS:
pipe.set_state(gst.STATE_NULL)
try:
image = self._load_and_clean(filename)
success = True
except Exception, err:
success = False
image = None
else:
err = None
log.debug('Success loading file %r', token)
eventwrap.post(
Event(CAMERA_LOAD,
filename=filename,
success=success,
token=token,
image=image,
err=err))
def _background_snap_onmessage( bus, message ):
"""Handle messages from the picture-snapping bus"""
log.debug( 'Message handler for gst messages: %s', message )
t = message.type
if t == gst.MESSAGE_EOS:
pipe.set_state(gst.STATE_NULL)
try:
image = self._load_and_clean( filename )
success = True
except Exception, err:
success = False
image = None
else:
err = None
log.debug( 'Success loading file %r', token )
eventwrap.post(Event(
CAMERA_LOAD,
filename=filename,
success = success,
token = token,
image=image,
err=err
))
def _quit(self, data=None):
self.__stopped = True
eventwrap.post(eventwrap.Event(pygame.QUIT))
def _quit(self, data=None):
self.__stopped = True
eventwrap.post(eventwrap.Event(pygame.QUIT))
def do_expose_event(self, event, widget):
"""Handle exposure event (trigger redraw by gst)"""
log.info('Expose event: %s', event)
from olpcgames import eventwrap
eventwrap.post(eventwrap.Event(eventwrap.pygame.VIDEOEXPOSE))
return True
def _quit(self, data=None):
self.__stopped = True
PCevent.post(Pevent.Event(pygame.QUIT))
