Demo/sgi/video/tv.py

   1 import string
   2
   3 from socket import *
   4 from gl import *
   5 from GL import *
   6 from DEVICE import *
   7 from time import millisleep, millitimer
   8
   9 PORT = 5555
  10
  11 PF = 2 # packfactor
  12 HS = 40 # Header size
  13
  14 def testimage():
  15         RGBcolor(0, 0, 0)
  16         clear()
  17         RGBcolor(0, 255, 0)
  18         cmov2i(10, 10)
  19         charstr('Waiting...')
  20
  21 def reshape():
  22         reshapeviewport()
  23         w, h = getsize()
  24         ortho2(0, w, 0, h)
  25         testimage()
  26         return w, h
  27
  28 def main():
  29         s = socket(AF_INET, SOCK_DGRAM)
  30         s.bind('', PORT)
  31
  32         foreground()
  33         wid = winopen('tv')
  34         RGBmode()
  35         gconfig()
  36         qdevice(ESCKEY)
  37
  38         oldw, oldh = getsize()
  39         ortho2(0, oldw, 0, oldh)
  40         testimage()
  41
  42         t1 = millitimer()
  43
  44         while 1:
  45                 if qtest():
  46                         dev, val = qread()
  47                         if dev == ESCKEY:
  48                                 winclose(wid)
  49                                 return
  50                         elif dev == REDRAW:
  51                                 oldw, oldh = reshape()
  52                 elif s.avail():
  53                         data = s.recv(17000)
  54                         header = string.strip(data[:HS])
  55                         w, h, pf, x1, y1, x2, y2 = eval(header)
  56                         if (w, h) <> (oldw, oldh):
  57                                 x, y = getorigin()
  58                                 x, y = x-1, y+21 # TWM correction
  59                                 winposition(x, x+w-1, y+oldh-h, y+oldh-1)
  60                                 oldw, oldh = reshape()
  61                         data2 = data[HS:]
  62                         dx = (x2-x1+1)/pf
  63                         dy = (y2-y1+1)/pf
  64                         data3 = unpackrect(dx, dy, 1, data2)
  65                         rectzoom(pf, pf)
  66                         lrectwrite(x1, y1, x1+dx-1, y1+dy-1, data3)
  67                         t1 = millitimer()
  68                 else:
  69                         t2 = millitimer()
  70                         if t2-t1 >= 5000:
  71                                 testimage()
  72                                 t1 = t2
  73                         else:
  74                                 millisleep(10)
  75
  76         winclose(wid)
  77         return data
  78
  79 main()