Demo/sgi/al/broadcast.py

   1 #! /usr/local/bin/python
   2
   3 # broadcast [port]
   4 #
   5 # Broadcast audio input on the network as UDP packets;
   6 # they can be received on any SGI machine with "radio.py".
   7 # This uses the input sampling rate, input source etc. set by apanel.
   8 # It uses the default sample width and #channels (16 bit/sample stereo).
   9 # (This is 192,000 Bytes at a sampling speed of 48 kHz, or ~137
  10 # packets/second -- use with caution!!!)
  11
  12 import sys, al
  13 from socket import *
  14
  15 port = 5555
  16 if sys.argv[1:]: port = eval(sys.argv[1])
  17
  18 s = socket(AF_INET, SOCK_DGRAM)
  19 s.allowbroadcast(1)
  20
  21 p = al.openport('broadcast', 'r')
  22
  23 address = '<broadcast>', port
  24 while 1:
  25         # 700 samples equals 1400 bytes, or about the max packet size!
  26         data = p.readsamps(700)
  27         s.sendto(data, address)