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
|
#!/ufs/guido/bin/sgi/python
# Compress an rgb or grey video file to jpeg format
# Usage:
#
# Vmkjpeg [infile [outfile]]
# Options:
#
# infile : input file (default film.video)
# outfile : output file (default out.video)
import sys
import jpeg
sys.path.append('/ufs/guido/src/video')
import VFile
# Main program -- mostly command line parsing
def main():
args = sys.argv[1:]
if len(args) < 1:
args.append('film.video')
if len(args) < 2:
args.append('out.video')
if len(args) > 2:
sys.stderr.write('usage: Vmkjpeg [infile [outfile]]\n')
sys.exit(2)
sts = process(args[0], args[1])
sys.exit(sts)
# Copy one file to another
def process(infilename, outfilename):
try:
vin = VFile.BasicVinFile(infilename)
except IOError, msg:
sys.stderr.write(infilename + ': I/O error: ' + `msg` + '\n')
return 1
except VFile.Error, msg:
sys.stderr.write(msg + '\n')
return 1
except EOFError:
sys.stderr.write(infilename + ': EOF in video file\n')
return 1
try:
vout = VFile.BasicVoutFile(outfilename)
except IOError, msg:
sys.stderr.write(outfilename + ': I/O error: ' + `msg` + '\n')
return 1
info = vin.getinfo()
if info[0] == 'rgb':
width, height = vin.getsize()
bytes = 4
format = 'jpeg'
elif info[0] == 'grey':
width, height = vin.getsize()
pf = vin.packfactor
width, height = width / pf, height / pf
bytes = 1
format = 'jpeggrey'
else:
sys.stderr.write('Vmkjpeg: input not in rgb or grey format\n')
return 1
info = (format,) + info[1:]
vout.setinfo(info)
vout.writeheader()
n = 0
try:
while 1:
t, data, cdata = vin.getnextframe()
n = n + 1
sys.stderr.write('Frame ' + `n` + '...')
data = jpeg.compress(data, width, height, bytes)
vout.writeframe(t, data, None)
sys.stderr.write('\n')
except EOFError:
pass
return 0
# Don't forget to call the main program
main()
|
