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#!/ufs/guido/bin/sgi/python-405
# Send live video UDP packets.
# Usage: Vsend [host [port]]
import sys
import time
import struct
from socket import *
import gl, GL, DEVICE
sys.path.append('/ufs/guido/src/video')
import LiveVideoIn
import LiveVideoOut
PKTMAX_UCAST = 16*1024 - 6
PKTMAX_BCAST = 1450
WIDTH = 400
HEIGHT = 300
HOST = '<broadcast>'
PORT = 5555
def main():
if not LiveVideoIn.have_video:
print 'Sorry, no video (use python-405 on roos)'
sys.exit(1)
host = HOST
port = PORT
if sys.argv[1:]:
host = sys.argv[1]
if sys.argv[2:]:
port = eval(sys.argv[2])
if host == '<broadcast>':
pktmax = PKTMAX_BCAST
else:
pktmax = PKTMAX_UCAST
gl.foreground()
gl.prefsize(WIDTH, HEIGHT)
wid = gl.winopen('Vsend')
gl.keepaspect(WIDTH, HEIGHT)
gl.stepunit(8, 6)
gl.winconstraints()
gl.qdevice(DEVICE.ESCKEY)
gl.qdevice(DEVICE.WINSHUT)
gl.qdevice(DEVICE.WINQUIT)
width, height = gl.getsize()
x, y = gl.getorigin()
lvo = LiveVideoOut.LiveVideoOut().init(wid, (x, y, width, height), \
width, height)
lvi = LiveVideoIn.LiveVideoIn().init(pktmax, width, height)
s = socket(AF_INET, SOCK_DGRAM)
s.allowbroadcast(1)
while 1:
if gl.qtest():
dev, val = gl.qread()
if dev in (DEVICE.ESCKEY, \
DEVICE.WINSHUT, DEVICE.WINQUIT):
break
if dev == DEVICE.REDRAW:
w, h = gl.getsize()
x, y = gl.getorigin()
if (w, h) <> (width, height):
lvi.close()
width, height = w, h
lvi = LiveVideoIn.LiveVideoIn() \
.init(pktmax, width, height)
lvo.close()
lvo = LiveVideoOut.LiveVideoOut() \
.init(wid, \
(x, y, width, height), \
width, height)
rv = lvi.getnextpacket()
if not rv:
time.millisleep(10)
continue
pos, data = rv
lvo.putnextpacket(pos, data)
hdr = struct.pack('hhh', pos, width, height)
s.sendto(hdr + data, (host, port))
lvi.close()
lvo.close()
main()
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