1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
#!/ufs/guido/bin/sgi/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().init(wid, width, height, vtype)
lvi = LiveVideoIn.LiveVideoIn().init(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.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()
|
