mirror of https://github.com/python/cpython
91 lines
1.9 KiB
Python
91 lines
1.9 KiB
Python
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#!/ufs/guido/bin/sgi/python
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# Copy a video file, fixing the line width to be a multiple of 4
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# Usage:
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#
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# Vfix [infile [outfile]]
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# Options:
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#
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# infile : input file (default film.video)
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# outfile : output file (default out.video)
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import sys
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import imageop
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sys.path.append('/ufs/guido/src/video')
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import VFile
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# Main program -- mostly command line parsing
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def main():
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args = sys.argv[1:]
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if len(args) < 1:
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args.append('film.video')
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if len(args) < 2:
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args.append('out.video')
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if len(args) > 2:
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sys.stderr.write('usage: Vfix [infile [outfile]]\n')
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sys.exit(2)
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sts = process(args[0], args[1])
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sys.exit(sts)
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# Copy one file to another
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def process(infilename, outfilename):
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try:
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vin = VFile.BasicVinFile().init(infilename)
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except IOError, msg:
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sys.stderr.write(infilename + ': I/O error: ' + `msg` + '\n')
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return 1
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except VFile.Error, msg:
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sys.stderr.write(msg + '\n')
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return 1
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except EOFError:
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sys.stderr.write(infilename + ': EOF in video file\n')
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return 1
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try:
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vout = VFile.BasicVoutFile().init(outfilename)
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except IOError, msg:
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sys.stderr.write(outfilename + ': I/O error: ' + `msg` + '\n')
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return 1
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info = vin.getinfo()
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if info[0] <> 'grey':
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sys.stderr.write('Vfix: input not in grey format\n')
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return 1
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vout.setinfo(info)
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inwidth, height = vin.getsize()
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pf = vin.packfactor
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if (inwidth/pf)%4 == 0:
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sys.stderr.write('Vfix: fix not necessary\n')
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return 1
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outwidth = (inwidth/pf/4)*4*pf
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print 'inwidth =', inwidth, 'outwidth =', outwidth
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vout.setsize(outwidth, height)
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vout.writeheader()
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n = 0
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try:
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while 1:
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t, data, cdata = vin.getnextframe()
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n = n + 1
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sys.stderr.write('Frame ' + `n` + '...')
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data = imageop.crop(data, 1, inwidth/pf, height/pf, \
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0, 0, outwidth/pf-1, height/pf-1)
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vout.writeframe(t, data, None)
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sys.stderr.write('\n')
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except EOFError:
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pass
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return 0
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# Don't forget to call the main program
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main()
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