Vsend.py :  » Language-Interface » ChinesePython » chinesepython2.1.3-0.4 » Demo » sgi » video » Python Open Source

Home
Python Open Source
1.3.1.2 Python
2.Ajax
3.Aspect Oriented
4.Blog
5.Build
6.Business Application
7.Chart Report
8.Content Management Systems
9.Cryptographic
10.Database
11.Development
12.Editor
13.Email
14.ERP
15.Game 2D 3D
16.GIS
17.GUI
18.IDE
19.Installer
20.IRC
21.Issue Tracker
22.Language Interface
23.Log
24.Math
25.Media Sound Audio
26.Mobile
27.Network
28.Parser
29.PDF
30.Project Management
31.RSS
32.Search
33.Security
34.Template Engines
35.Test
36.UML
37.USB Serial
38.Web Frameworks
39.Web Server
40.Web Services
41.Web Unit
42.Wiki
43.Windows
44.XML
Python Open Source » Language Interface » ChinesePython 
ChinesePython » chinesepython2.1.3 0.4 » Demo » sgi » video » Vsend.py
#! /usr/bin/env python

# Send live video UDP packets.
# Usage: Vsend [-b] [-h height] [-p port] [-s size] [-t ttl] [-w width]
#              [host] ..

import sys
import time
import struct
import string
from socket import *
from SOCKET import *
import gl, GL, DEVICE
sys.path.append('/ufs/guido/src/video')
import LiveVideoIn
import LiveVideoOut
import SV
import getopt
from IN import *

from senddefs import *

def usage(msg):
  print msg
  print 'usage: Vsend [-b] [-h height] [-p port] [-s size] [-t ttl] [-c type] [-m]',
  print '[-w width] [host] ...'
  print '-b        : broadcast on local net'
  print '-h height : window height (default ' + `DEFHEIGHT` + ')'
  print '-p port   : port to use (default ' + `DEFPORT` + ')'
  print '-t ttl    : time-to-live (multicast only; default 1)'
  print '-s size   : max packet size (default ' + `DEFPKTMAX` + ')'
  print '-w width  : window width (default ' + `DEFWIDTH` + ')'
  print '-c type   : Type: rgb8, mono or grey (default rgb8)'
  print '[host] ...: host(s) to send to (default multicast to ' + \
    DEFMCAST + ')'
  sys.exit(2)


def main():
  sys.stdout = sys.stderr

  hosts = []
  port = DEFPORT
  ttl = -1
  pktmax = DEFPKTMAX
  width = DEFWIDTH
  height = DEFHEIGHT
  vtype = 'rgb8'

  try:
    opts, args = getopt.getopt(sys.argv[1:], 'bh:p:s:t:w:c:')
  except getopt.error, msg:
    usage(msg)

  try:
    for opt, optarg in opts:
      if opt == '-p':
        port = string.atoi(optarg)
      if opt == '-b':
        host = '<broadcast>'
      if opt == '-t':
        ttl = string.atoi(optarg)
      if opt == '-s':
        pktmax = string.atoi(optarg)
      if opt == '-w':
        width = string.atoi(optarg)
      if opt == '-h':
        height = string.atoi(optarg)
      if opt == '-c':
        vtype = optarg
  except string.atoi_error, msg:
    usage('bad integer: ' + msg)

  for host in args:
    hosts.append(gethostbyname(host))

  if not hosts:
    hosts.append(gethostbyname(DEFMCAST))

  if not LiveVideoIn.have_video:
    print 'Sorry, no video available (use python-405)'
    sys.exit(1)

  gl.foreground()
  gl.prefsize(width, height)
  gl.stepunit(8, 6)
  wid = gl.winopen('Vsend')
  gl.keepaspect(width, height)
  gl.stepunit(8, 6)
  gl.maxsize(SV.PAL_XMAX, SV.PAL_YMAX)
  gl.winconstraints()
  gl.qdevice(DEVICE.ESCKEY)
  gl.qdevice(DEVICE.WINSHUT)
  gl.qdevice(DEVICE.WINQUIT)
  gl.qdevice(DEVICE.WINFREEZE)
  gl.qdevice(DEVICE.WINTHAW)
  width, height = gl.getsize()

  lvo = LiveVideoOut.LiveVideoOut(wid, width, height, vtype)

  lvi = LiveVideoIn.LiveVideoIn(pktmax, width, height, vtype)

  s = socket(AF_INET, SOCK_DGRAM)
  s.setsockopt(SOL_SOCKET, SO_BROADCAST, 1)
  if ttl >= 0:
    s.setsockopt(IPPROTO_IP, IP_MULTICAST_TTL, chr(ttl))

  frozen = 0

  while 1:

    if gl.qtest():
      dev, val = gl.qread()
      if dev in (DEVICE.ESCKEY, \
        DEVICE.WINSHUT, DEVICE.WINQUIT):
        break
      if dev == DEVICE.WINFREEZE:
        frozen = 1
      if dev == DEVICE.WINTHAW:
        frozen = 0
      if dev == DEVICE.REDRAW:
        w, h = gl.getsize()
        x, y = gl.getorigin()
        if (w, h) <> (width, height):
          width, height = w, h
          lvi.resizevideo(width, height)
          lvo.resizevideo(width, height)

    rv = lvi.getnextpacket()
    if not rv:
      time.sleep(0.010)
      continue

    pos, data = rv

    if not frozen:
      lvo.putnextpacket(pos, data)

    hdr = struct.pack('hhh', pos, width, height)
    for host in hosts:
      try:
        s.sendto(hdr + data, (host, port))
      except error, msg: # really socket.error
        if msg[0] <> 121: # no buffer space available
          raise error, msg # re-raise it
        print 'Warning:', msg[1]

  lvi.close()
  lvo.close()


main()
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.