class _URLChannel:
def __init__(self, name, id, bouquet, URL):
self.name = name
self.id = id
self.bouquet = bouquet
self.URL = URL
self._object = None
self._fdsplitter = None
def get_fd(self):
if self._object:
return self._object.fileno()
else:
return -1
def connect(self):
self._object = urllib.urlopen(self.URL)
def start_recording(self, filter_chain):
# create FDSplitter if not existing
if self._fdsplitter == None:
self._fdsplitter = FDSplitter(self.get_fd())
return self._fdsplitter.add_filter_chain(filter_chain._create())
def stop_recording(self, chain_id):
self._fdsplitter.remove_filter_chain(chain_id)
self._fdsplitter = None
self._object.close()
self._object = None
def __str__(self):
s = '%s:%s:%s:%s (fd=%d)' % (self.name, self.id, self.bouquet,
self.URL, self.get_fd())
return s
def start_recording(self, channel, filter_chain):
"""
Start recording a channel to the filter chain. The filter chain needs
the video and audio ids to know what part of the transport stream
should be recorded. This functions gets all ids for the channel and
starts the recording at C++ level.
"""
pids = self._device.get_pids(channel)
log.info("start recording %s with pid list %s" % (channel, pids))
filter_chain.set_pids(pids[0][0], pids[1][0])
# create real filter chain
filter_chain = filter_chain._create()
# start recording
rec_id = self._device.start_recording(channel, filter_chain)
# create FDSplitter if not existing
if self._fdsplitter == None:
self._fdsplitter = FDSplitter( self.adapter + '/dvr0', FDSplitter.INPUT_TS )
chain_id = self._fdsplitter.add_filter_chain( filter_chain )
self.recid2chainid[ rec_id ] = chain_id
return rec_id
def start_recording(self, channel, filter_chain):
log.debug('start recording channel %s' % channel)
if len(self.recid2chainid) >= self.max_recordings:
log.error('IVTV can only record %d thing(s) at a time' % \
self.max_recordings)
self.setchannel(str(channel))
self.assert_settings()
self.set_gop_end(self.GOP_END)
if self._fdsplitter == None:
self._fdsplitter = FDSplitter(self.devfd)
self.recording_id += 1
chain_id = self._fdsplitter.add_filter_chain(filter_chain._create())
self.recid2chainid[self.recording_id] = chain_id
return self.recording_id
class DvbDevice(Device):
"""
Recorder for DVB devices based on the C++ module _DvbDevice.
"""
def __init__(self, device, channels):
"""
Init the device by creating a C++ object for DVB and create a
IOMonitor for the file descriptor. The C++ objecty will
register and unregister from notifier.
"""
self.adapter = device
self._device = _DvbDevice(device, channels);
self._fdsplitter = None
self.recid2chainid = { }
def start_recording(self, channel, filter_chain):
"""
Start recording a channel to the filter chain. The filter chain needs
the video and audio ids to know what part of the transport stream
should be recorded. This functions gets all ids for the channel and
starts the recording at C++ level.
"""
pids = self._device.get_pids(channel)
log.info("start recording %s with pid list %s" % (channel, pids))
filter_chain.set_pids(pids[0][0], pids[1][0])
# create real filter chain
filter_chain = filter_chain._create()
# start recording
rec_id = self._device.start_recording(channel, filter_chain)
# create FDSplitter if not existing
if self._fdsplitter == None:
self._fdsplitter = FDSplitter( self.adapter + '/dvr0', FDSplitter.INPUT_TS )
chain_id = self._fdsplitter.add_filter_chain( filter_chain )
self.recid2chainid[ rec_id ] = chain_id
return rec_id
def stop_recording(self, id):
"""
Stop the recording with the given id.
"""
# remove filter chain
if not self.recid2chainid.has_key(id):
log.error("recid %d not found" % id)
return None
self._fdsplitter.remove_filter_chain( self.recid2chainid[id] )
# remove id from map
del self.recid2chainid[id]
# check if last filter chain was removed
if not self.recid2chainid:
self._fdsplitter = None
# stop recording
return self._device.stop_recording(id)
def get_bouquet_list(self):
"""
Return bouquet list from C++ object.
"""
return self._device.get_bouquet_list()
def start_recording(self, filter_chain):
# create FDSplitter if not existing
if self._fdsplitter == None:
self._fdsplitter = FDSplitter(self.get_fd())
return self._fdsplitter.add_filter_chain(filter_chain._create())
class IVTVDevice(Device, IVTV):
"""
Class for IVTV devices.
I'm still contemplating weather to keep this object extending IVTV
or to use a _device line DvbDevice.
"""
def __init__(self, device, norm, chanlist=None, channels=None, card_input=4,
resolution=None, aspect=None, audio_bitmask=None, bframes=None,
bitrate_mode=None, bitrate=None, bitrate_peak=None, dnr_mode=None,
dnr_spatial=None, dnr_temporal=None, dnr_type=None,
framerate=None, framespergop=None, gop_closure=1,
pulldown=None, stream_type=None):
IVTV.__init__(self, device, norm, chanlist, channels, card_input,
resolution, aspect, audio_bitmask, bframes, bitrate_mode,
bitrate, bitrate_peak, dnr_mode, dnr_spatial,
dnr_temporal, dnr_type, framerate, framespergop,
gop_closure, pulldown, stream_type)
self._fdsplitter = None
# End Encoding at GOP Ending Call 0=StopNOW, 1=GOPwait
self.GOP_END = 0
# The IVTV encoder needs time to flush and return a closed GOP.
# NOTE: Be careful how we impliment channel changes! On the bright
# side we can change channels in IVTV without closing the stream.
# Setting this to 0 for now but if GOP_END==1 we need to keep reading
# after STREAMOFF is called. I had _some_ success with this but IMO
# the driver is still just too flaky :(
self.stop_start_delay = 0
# We can't even overlap recordings on the same channel because in order
# to stop with a nice stream (closed GOP at the end) we must use the
# STREAMOFF ioctl which will screw up the second recording.
self.max_recordings = 1
# Even though we can only do one recording at a time, track the
# recording id and chain id.
self.recording_id = 0
self.recid2chainid = {}
def start_recording(self, channel, filter_chain):
log.debug('start recording channel %s' % channel)
if len(self.recid2chainid) >= self.max_recordings:
log.error('IVTV can only record %d thing(s) at a time' % \
self.max_recordings)
self.setchannel(str(channel))
self.assert_settings()
self.set_gop_end(self.GOP_END)
if self._fdsplitter == None:
self._fdsplitter = FDSplitter(self.devfd)
self.recording_id += 1
chain_id = self._fdsplitter.add_filter_chain(filter_chain._create())
self.recid2chainid[self.recording_id] = chain_id
return self.recording_id
def stop_recording(self, id):
log.debug('stop recording %s' % id)
if self.GOP_END:
try:
self.stop_encoding()
except:
log.error('STREAMOFF failed')
kaa.OneShotTimer(self.remove_splitter, id).start(self.stop_start_delay)
def remove_splitter(self, id):
log.debug('remove splitter %s' % id)
# remove filter chain
if not self.recid2chainid.has_key(id):
log.error('recid %d not found' % id)
return None
self._fdsplitter.remove_filter_chain(self.recid2chainid[id])
# remove id from map
del self.recid2chainid[id]
# check if last filter chain was removed
if not self.recid2chainid:
self._fdsplitter = None
self.close()
self.open()
