mirror of https://github.com/python/cpython
Added usage() and help() to Vrecb, and turn on -f by default.
Removed duplicate description of -r option from documentation file.
This commit is contained in:
Guido van Rossum
parent
f0384fdb97
commit
3f2ef09f40
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@ -1,28 +1,7 @@
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#! /ufs/guido/bin/sgi/python-405
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#! /ufs/guido/bin/sgi/python
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# Capture a continuous CMIF movie using the Indigo video library and board
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# Usage:
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#
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# makemovie [-r rate] [-w width] [moviefile]
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# Options:
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#
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# -r rate : capture 1 out of every 'rate' frames (default 1)
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# -w width : initial window width (default interactive placement)
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# -d : drop fields if needed
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# -g bits : greyscale (2, 4 or 8 bits)
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# -G : 2-bit greyscale dithered
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# -m : monochrome dithered
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# -M value : monochrome tresholded with value
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# -f : Capture fields (in stead of frames)
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# -n number : Capture 'number' fields (default 60)
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#
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# moviefile : here goes the movie data (default film.video);
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# the format is documented in cmif-film.ms
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# Capture a CMIF movie using the Indigo video library and board in burst mode
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# User interface:
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@ -51,6 +30,38 @@ import string
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import imageop
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import sgi
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# Usage and help functions (keep this up-to-date if you change the program!)
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def usage():
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print 'Usage: Vrecb [options] [moviefile]'
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print
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print 'Options:'
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print '-r rate : capture 1 out of every "rate" frames', \
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'(default and min 1)'
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print '-w width : initial window width', \
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'(default interactive placement)'
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print '-d : drop fields if needed'
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print '-g bits : greyscale (2, 4 or 8 bits)'
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print '-G : 2-bit greyscale dithered'
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print '-m : monochrome dithered'
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print '-M value : monochrome tresholded with value'
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print '-f : Capture fields (instead of frames)'
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print '-n number : Capture this many frames (default 60)'
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print 'moviefile : here goes the movie data (default film.video)'
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def help():
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print 'Press the left mouse button to start recording.'
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print 'Recording time is determined by the -n option.'
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print 'You can record as many times as you wish, but each'
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print 'recording overwrites the output file(s) -- only the'
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print 'last recording is kept.'
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print
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print 'Press ESC or use the window manager Quit or Close window option'
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print 'to quit. If you quit before recording anything, the output'
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print 'file(s) are not touched.'
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# Main program
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def main():
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@ -65,37 +76,55 @@ def main():
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fields = 0
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number = 60
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opts, args = getopt.getopt(sys.argv[1:], 'r:w:dg:mM:Gfn:')
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for opt, arg in opts:
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if opt == '-r':
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rate = string.atoi(arg)
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if rate < 2:
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sys.stderr.write('-r rate must be >= 2\n')
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sys.exit(2)
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elif opt == '-w':
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width = string.atoi(arg)
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elif opt == '-d':
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drop = 1
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elif opt == '-g':
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grey = 1
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greybits = string.atoi(arg)
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if not greybits in (2,4,8):
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print 'Only 2, 4 or 8 bit greyscale supported'
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elif opt == '-G':
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grey = 1
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greybits = -2
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elif opt == '-m':
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mono = 1
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elif opt == '-M':
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mono = 1
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monotreshold = string.atoi(arg)
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elif opt == '-f':
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fields = 1
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elif opt == '-n':
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number = string.atoi(arg)
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try:
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opts, args = getopt.getopt(sys.argv[1:], 'r:w:dg:mM:Gfn:')
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except getopt.error, msg:
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sys.stdout = sys.stderr
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print 'Error:', msg, '\n'
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usage()
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sys.exit(2)
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try:
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for opt, arg in opts:
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if opt == '-r':
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rate = string.atoi(arg)
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if rate < 1:
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sys.stderr.write('-r rate must be >= 1\n')
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sys.exit(2)
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elif opt == '-w':
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width = string.atoi(arg)
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elif opt == '-d':
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drop = 1
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elif opt == '-g':
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grey = 1
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greybits = string.atoi(arg)
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if not greybits in (2,4,8):
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sys.stderr.write( \
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'Only 2, 4 or 8 bit greyscale supported\n')
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sys.exit(2)
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elif opt == '-G':
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grey = 1
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greybits = -2
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elif opt == '-m':
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mono = 1
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elif opt == '-M':
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mono = 1
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monotreshold = string.atoi(arg)
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elif opt == '-f':
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fields = 1
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elif opt == '-n':
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number = string.atoi(arg)
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except string.atoi_error:
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sys.stdout = sys.stderr
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print 'Option', opt, 'requires integer argument'
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sys.exit(2)
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if not fields:
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print '-f option assumed until Jack fixes it'
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fields = 1
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if args[2:]:
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sys.stderr.write('usage: Vrec [options] [file]\n')
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sys.stderr.write('usage: Vrecb [options] [file]\n')
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sys.exit(2)
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if args:
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@ -151,7 +180,7 @@ def main():
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gl.qdevice(DEVICE.WINSHUT)
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gl.qdevice(DEVICE.ESCKEY)
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print 'Press left mouse to start recording'
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help()
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while 1:
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dev, val = gl.qread()
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@ -231,6 +260,7 @@ def record(v, info, filename, mono, grey, greybits, monotreshold, fields):
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vout.packfactor = (1,-2)
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else:
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print 'Sorry, can only save fields at the moment'
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print '(i.e. you *must* use the -f option)'
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gl.wintitle(filename)
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return
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vout.writeheader()
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@ -38,8 +38,6 @@ Options for Vrec:
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-q queuesize Set size of the video board circular buffer. A little
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experimentation with this may lead to more video being
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captured, but not always.
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-r rate Set video rate. A rate of 2 tries to capture every
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second frame, etc.
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-P frames Preallocate diskspace for 'frames' images. This may
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enable you to capture more frames.
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