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#!/ufs/guido/bin/sgi/python-405
# 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]',
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 '[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
try:
opts, args = getopt.getopt(sys.argv[1:], 'bh:p:s:t:w:')
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)
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 on roos)'
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()
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.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):
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
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()
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