def test_bats_sr(from_file, to_file): def a(): print 'a()' loss_rate = 0.1 r = 0 e = Encoder.fromfile(from_file) d = NIODecoder.tofile(to_file, os.path.getsize(from_file), a, hashFile(from_file)) # d = Decoder.tofile(to_file, os.path.getsize(from_file)) rec = Recoder(BATCH_SIZE, PACKET_SIZE) while not d.complete(): s = e.genPacket() if s: if random() >= loss_rate: s = rec.genPacket(s,1) if random() >= loss_rate: d.receivePacket(s) r += 1 print 'received:%d,decoded:%d'%(r, d.getDecoded())
def test_bats_sr(from_file, to_file):
def a():
print 'a()'
loss_rate = 0.1
r = 0
e = Encoder.fromfile(from_file)
d = NIODecoder.tofile(to_file, os.path.getsize(from_file), a,
hashFile(from_file))
# d = Decoder.tofile(to_file, os.path.getsize(from_file))
rec = Recoder(BATCH_SIZE, PACKET_SIZE)
while not d.complete():
s = e.genPacket()
if s:
if random() >= loss_rate:
s = rec.genPacket(s, 1)
if random() >= loss_rate:
d.receivePacket(s)
r += 1
print 'received:%d,decoded:%d' % (r, d.getDecoded())
def main():
global g_decoding_finised
enc = Encoder.fromfile(sys.argv[1])
# Create recoder instance
rec = Recoder(16, PACKET_SIZE)
# channel loss rate
r = 0.05
buf = []
while not g_decoding_finised:
send = enc.genPacket() # Generate a packet
# new batch
if send == '':
if len(buf) > 0:
tmp = ''.join(buf)
for i in xrange(0, 16):
if random() >= r:
resend = rec.genPacket(tmp, len(buf))
dec.receivePacket(resend)
del buf[0:len(buf)]
# old batch
else:
#simulate channel
if random() >= r:
buf.append(send)
dec.waitDecodingThread()
ret = subprocess.call(['diff',
sys.argv[1],
'output'])
sys.exit(ret)
# channel loss rate
r = 0.05
import time
t0 = time.time()
buf = []
while not dec.complete():
send = enc.genPacket() # Generate a packet
#Test for new batch
if send == '':
# Recode
if len(buf) > 0:
tmp = ''.join(buf)
for i in range(0, 16):
if random() >= r:
resend = rec.genPacket(tmp, len(buf))
dec.receivePacket(resend)
Rcnt += 1
else:
pass
#print "Packet lost in second link"
# reset buffer
del buf[0:len(buf)]
else:
pass
#print "All packets in batch lost"
continue
#simulate channel
if random() >= r:
buf.append(send)
else:
#for i in range(10240): # enc.genPacket() #print "Ended...", time.time()-t0 #sys.exit(1) buf = [] while not dec.complete(): send = enc.genPacket() # Generate a packet #Test for new batch if send == '': #print "New Batch!" # Recode if len(buf) > 0: tmp = ''.join(buf) for i in range(0, 16): if random() >= r: resend = rec.genPacket(tmp, len(buf)) dec.receivePacket(resend) Rcnt += 1 else: pass #print "Packet lost in second link" # reset buffer del buf[0:len(buf)] else: #print "All packets in batch lost" pass continue #simulate channel if random() >= r: buf.append(send) else:
