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import os
import sys
import string
import McFoo.backend.file
import McFoo.observe
from errno import EIO
import twisted.internet.process
from twisted.internet import protocol
import twisted.protocols.basic
from twisted.python import log
from twisted.spread import pb
from twisted.persisted import styles
from twisted.internet import reactor
import McFoo.observe
import McFoo.server.pb
import McFoo.audiodevice
class DjObserver(McFoo.observe.Observer):
def remote_change(self, at):
pass
class Dj(pb.Service):
def __init__(self, app, authorizer, playqueue, volume, profileTable):
pb.Service.__init__(self, "dj", app, authorizer)
self.playqueue = playqueue
self.volume = volume
self.profileTable = profileTable
self.observers=McFoo.observe.Observers()
self._audio_dev = McFoo.audiodevice.AudioDevice()
self.file=None
self.timer=None
self.next()
def __getstate__(self):
r=pb.Service.__getstate__(self)
r['timer']=None
return r
def startService(self):
if self.file:
self.timer = reactor.callLater(0, self._tick)
else:
self.next()
def pause(self):
if self.timer:
reactor.cancelCallLater(self.timer)
self.timer=None
def pauseorplay(self):
if self.timer:
self.pause()
else:
self.play()
def getPerspectiveNamed(self, name):
return McFoo.server.pb.DjPerspective(name, "Nobody", self, self.playqueue, self.volume, self.profileTable)
delimiter = '\n'
def _next(self):
self.file=None
while 1:
next=self.playqueue.pop()
filename=next.filename
try:
self.file=McFoo.backend.file.audiofilechooser(filename)
except McFoo.backend.file.McFooBackendFileUnknownFormat:
print "unkown format:", next
pass
except McFoo.backend.file.McFooBackendFileDoesNotExist:
print "file does not exist:", next
pass
else:
break
self.file.start_play()
def next(self):
self._next()
self.play()
def play(self):
if not self.timer:
self.timer = reactor.callLater(0, self._tick)
def _notify(self):
if self.file.time_total():
at=((self.file.time_tell() or 0.0)
/self.file.time_total())
else:
at=0.0
self.observers('change', at)
def _tick(self):
self.timer = None
SIZE = 8192
(buff, bytes, bit) = self.file.read(SIZE)
if bytes == 0:
self._next()
self._audio_dev.play(buff, bytes)
self.timer = reactor.callLater(0, self._tick)
self._notify()
def _jumpto(self, to):
total=self.file.time_total()
if to > total:
to=total
if to < 0:
to=0
self.file.time_seek(to)
self._notify()
def jumpto(self, to):
if self.file.time_total():
to=to*self.file.time_total()
self._jumpto(to)
else:
# no, you can't jump around in this song
self.observers('change', 0.0)
def jump(self, secs):
if self.file.time_total():
self._jumpto(self.file.time_tell()+float(secs))
else:
# no, you can't jump around in this song
self.observers('change', 0.0)
def observe(self, callback):
if self.file.time_total():
at=((self.file.time_tell() or 0.0)
/self.file.time_total())
else:
at=0.0
self.observers.append_and_call(callback,
'change',
at)
def unobserve(self, callback):
self.observers.remove(callback)
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