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
|
#! /ufs/guido/bin/sgi/python
# Copy a video file, interactively, frame-by-frame.
import sys
import getopt
from gl import *
from DEVICE import *
import VFile
import VGrabber
import string
import imageop
def report(time, iframe):
print 'Frame', iframe, ': t =', time
def usage():
sys.stderr.write('usage: Vcopy [-t type] [-m treshold] [-a] infile outfile\n')
sys.stderr.write('-t Convert to other type\n')
sys.stderr.write('-a Automatic\n')
sys.stderr.write('-m Convert grey to mono with treshold\n')
sys.stderr.write('-d Convert grey to mono with dithering\n')
sys.exit(2)
def help():
print 'Command summary:'
print 'n get next image from input'
print 'w write current image to output'
class GrabbingVoutFile(VFile.VoutFile, VGrabber.VGrabber):
pass
def main():
foreground()
try:
opts, args = getopt.getopt(sys.argv[1:], 't:am:d')
except getopt.error, msg:
print msg
usage()
if len(args) <> 2:
usage()
[ifile, ofile] = args
print 'open film ', ifile
ifilm = VFile.VinFile().init(ifile)
print 'open output ', ofile
ofilm = GrabbingVoutFile().init(ofile)
ofilm.setinfo(ifilm.getinfo())
use_grabber = 0
continuous = 0
tomono = 0
tomonodither = 0
for o, a in opts:
if o == '-t':
ofilm.format = a
use_grabber = 1
if o == '-a':
continuous = 1
if o == '-m':
if ifilm.format <> 'grey':
print '-m only supported for greyscale'
sys.exit(1)
tomono = 1
treshold = string.atoi(a)
ofilm.format = 'mono'
if o == '-d':
if ifilm.format <> 'grey':
print '-m only supported for greyscale'
sys.exit(1)
tomonodither = 1
ofilm.format = 'mono'
ofilm.writeheader()
#
prefsize(ifilm.width, ifilm.height)
w = winopen(ifile)
qdevice(KEYBD)
qdevice(ESCKEY)
qdevice(WINQUIT)
qdevice(WINSHUT)
print 'qdevice calls done'
#
help()
#
time, data, cdata = ifilm.getnextframe()
ifilm.showframe(data, cdata)
iframe = 1
report(time, iframe)
#
while 1:
if continuous:
dev = KEYBD
else:
dev, val = qread()
if dev in (ESCKEY, WINQUIT, WINSHUT):
break
if dev == REDRAW:
reshapeviewport()
elif dev == KEYBD:
if continuous:
c = '0'
else:
c = chr(val)
#XXX Debug
if c == 'R':
c3i(255,0,0)
clear()
if c == 'G':
c3i(0,255,0)
clear()
if c == 'B':
c3i(0,0,255)
clear()
if c == 'w' or continuous:
if use_grabber:
try:
data, cdata = ofilm.grabframe()
except VFile.Error, msg:
print msg
break
if tomono:
data = imageop.grey2mono(data, \
ifilm.width, ifilm.height, \
treshold)
if tomonodither:
data = imageop.dither2mono(data, \
ifilm.width, ifilm.height)
ofilm.writeframe(time, data, cdata)
print 'Frame', iframe, 'written.'
if c == 'n' or continuous:
try:
time,data,cdata = ifilm.getnextframe()
ifilm.showframe(data, cdata)
iframe = iframe+1
report(time, iframe)
except EOFError:
print 'EOF'
if continuous:
break
ringbell()
elif dev == INPUTCHANGE:
pass
else:
print '(dev, val) =', (dev, val)
ofilm.close()
main()
|
