def set_location(self, value):
value = value.strip()
if value != self.location:
self.location = value
self.index = 0
if self.flow != None: #not the first time
self.flow.stop()
self.flow = FlowConsumerThread(Id=self.Id, name=self.location, size_fix=self.chunksize, size_offset=self.size_offset, window_fix=self.window_fix, rtt_fix=self.rtt_fix)
self.flow.start()
log.info("we start a new flow")
class NDNSrc(threading.Thread):
def __init__(self, chunksize=None,size_offset=0, window_fix=None, rtt_fix=None):
threading.Thread.__init__(self)
#gobject.GObjectMeta.__init__(self)
#gst.Element.__init__(self)
#gst.URIHandler.__init__(self)
self.location = None#"/h243/chunksize/dir/c.mp3"
self.flow = None
self.chunksize = chunksize
self.size_offset = size_offset
self.window_fix =window_fix
self.rtt_fix = rtt_fix
self.Id = "win%s-chunksize%s-rtt%s" %(self.window_fix, self.chunksize, self.rtt_fix)
#print self.ndn_name, type(self.ndn_name)
# self.connect("need-data", self.need_data)
# self.connect("enough-data", self.enough_data)
# self.connect("seek-data", self.seed_data)
# self.connect("end-of-stream", self.end_of_stream)
# def __init__(self, Id, ndn_name, fout=None, monitor_out_dir="output", enable_monitor=True, size_fix=None, window_fix=None, rtt_fix=None,
# packet_max_data_size=ETH_MTU-IP_HEADER_SIZE-UDP_HEADER_SIZE):
self.index = 0
self.first_run = True
self.is_end = False
def sample(self):
if self.flow == None:
return None, None, None, None, None
OptimalChunkSizes, PacketLossRates, CongestionWindowSizes, Rtos, TimeCost = self.flow.summary()
timecost = TimeCost[0]
#assert type(timecost) == int, "wrong type: %s" %(type(timecost))
if self.first_run:
self.first_run = False
if timecost == 0:
temp = 0
else:
temp = self.flow.mydata.accept_bytes/float(timecost)
self.bitrates = [temp]
self.goodputs = [self.flow.mydata.accept_bytes]
accept_raw_bytes, requested_raw_bytes, = self.flow.sample2()
self.throughputs = [accept_raw_bytes]
self.requested_sizes = [requested_raw_bytes]
else:
temp2 = timecost - self.last_time_cost
if temp2 != 0:
temp = (self.flow.mydata.accept_bytes-self.last_accept_bytes)/temp2
else:
temp = 0
assert temp>=0, "bitrate=%s, accept_byets:%s, last accept bytes:%s, temp2:%s, %s" \
%(temp, self.flow.mydata.accept_bytes, self.last_accept_bytes, temp2, type(self.last_accept_bytes))
self.bitrates.append(temp)
self.goodputs.append(self.flow.mydata.accept_bytes)
accept_raw_bytes, requested_raw_bytes, = self.flow.sample2()
self.throughputs.append(accept_raw_bytes)
self.requested_sizes.append(requested_raw_bytes)
self.last_time_cost = timecost
self.last_accept_bytes = self.flow.mydata.accept_bytes
if self.flow.is_all:
self.is_end = True
return OptimalChunkSizes, PacketLossRates, CongestionWindowSizes, Rtos, self.bitrates, self.goodputs, \
self.throughputs, self.requested_sizes
# def run(self):
# self.flow = FlowConsumerThread(Id=self.Id, name=self.location)
# self.flow.start()
def need_data(self, appsrc, need_bytes):
#self.emit("end-of-stream")
if self.flow == None:
return
temp = "all" if self.flow.is_all else "requesting"
if temp == "all":
self.is_end = True
name = appsrc.get_name()
while self.flow.mydata.expected_chunkI <= self.index:
if self.flow.is_all:
appsrc.emit('end-of-stream')
return
time.sleep(1)
log.debug("%s waiting data, player next need: %i, NDN expect:%i, total: %s, %s"
%(name, self.index, self.flow.mydata.expected_chunkI, self.flow.mydata.satisfied_chunkN, temp))
chunkinfo = self.flow.chunkInfos[self.index]
data = chunkinfo.content
buffer = gst.Buffer(data)
"""gstream will showo critical message here, since caps is not valid (ANY)
"""
#buffer.set_caps(caps)
rst = appsrc.emit("push-buffer", buffer)
if rst == gst.FLOW_OK:
self.index += 1
rst = ""
log.debug("%s push-buffer back, player next need: %i, NDN expect:%i, total: %s, %s"
%(name, self.index, self.flow.mydata.expected_chunkI, self.flow.mydata.satisfied_chunkN, temp))
else:
log.warn("%s fail to push-buffer back, %s, player next need: %i, NDN expect:%i, total: %s, %s"
%(name, rst, self.index, self.flow.mydata.expected_chunkI, self.flow.mydata.satisfied_chunkN, temp))
def set_location(self, value):
value = value.strip()
if value != self.location:
self.location = value
self.index = 0
if self.flow != None: #not the first time
self.flow.stop()
self.flow = FlowConsumerThread(Id=self.Id, name=self.location, size_fix=self.chunksize, size_offset=self.size_offset, window_fix=self.window_fix, rtt_fix=self.rtt_fix)
self.flow.start()
log.info("we start a new flow")
def stop(self):
if self.flow != None:
self.flow.stop()
#threading.Thread.__stop(self)
return 0
