Added usage message, minor cosmetic changes
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Guido van Rossum
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#! /ufs/guido/bin/sgi/python-405
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#! /ufs/guido/bin/sgi/python
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#! /ufs/guido/bin/sgi/python-405
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# Capture a CMIF movie using the Indigo video library and board
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# Usage:
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#
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# makemovie [-a] [-q queuesize] [-r rate] [-w width] [moviefile [audiofile]]
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# The CMIF video file format is documented in cmif-film.ms.
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# Audio data is recorded in AIFF format, using the input sampling
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# rate, source and volume set by the audio panel, in mono, 8
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# bits/sample.
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# Options:
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#
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# -a : record audio as well
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# -q queuesize : set the capture queue size (default 2)
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# -r rate : capture 1 out of every 'rate' frames (default and min 2)
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# -w width : initial window width (default interactive placement)
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# -n : Don't write to file, only timing info
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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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# -P frames : preallocate space for 'frames' frames
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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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# audiofile : with -a, here goes the audio data (default film.aiff);
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# audio data is recorded in AIFF format, using the
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# input sampling rate, source and volume set by the
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# audio panel, in mono, 8 bits/sample
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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: Vrec [options] [moviefile [audiofile]]'
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print
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print 'Options:'
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print '-a : record audio as well'
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print '-q queuesize : set the capture queue size (default 2)'
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print '-r rate : capture 1 out of every "rate" frames', \
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'(default and min 2)'
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print '-w width : initial window width', \
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'(default interactive placement)'
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print '-n : Don\'t write to file, only timing info'
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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 (in stead of frames)'
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print '-P frames : preallocate space for "frames" frames'
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print 'moviefile : here goes the movie data (default film.video)'
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print 'audiofile : with -a, here goes the audio data', \
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'(default film.aiff)'
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def help():
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print 'Press the left mouse button to start recording, release it to'
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print 'end recording. You can record as many times as you wish, but'
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print 'each recording overwrites the output file(s) -- only the last'
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print '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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# User interface:
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#
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# Start the application. Resize the window to the desired movie size.
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# Press the left mouse button to start recording, release it to end
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# recording. You can record as many times as you wish, but each time
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# you overwrite the output file(s), so only the last recording is
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# kept.
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#
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# Press ESC or select the window manager Quit or Close window option
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# to quit. If you quit before recording anything, the output file(s)
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# are not touched.
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# Imported modules
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import sys
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sys.path.append('/ufs/guido/src/video')
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@ -58,6 +59,7 @@ import string
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import imageop
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import sgi
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# Main program
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def main():
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@ -75,45 +77,73 @@ def main():
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fields = 0
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preallocspace = 0
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opts, args = getopt.getopt(sys.argv[1:], 'aq:r:w:ndg:mM:GfP:')
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for opt, arg in opts:
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if opt == '-a':
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audio = 1
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elif opt == '-q':
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qsize = string.atoi(arg)
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elif 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 == '-n':
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norecord = 1
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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 == '-P':
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preallocspace = string.atoi(arg)
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if args[2:]:
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sys.stderr.write('usage: Vrec [options] [file [audiofile]]\n')
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# Parse command line
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try:
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opts, args = getopt.getopt(sys.argv[1:], 'aq:r:w:ndg:mM:GfP:')
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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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# Interpret options
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try:
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for opt, arg in opts:
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if opt == '-a':
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audio = 1
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elif opt == '-q':
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qsize = string.atoi(arg)
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elif opt == '-r':
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rate = string.atoi(arg)
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if rate < 2:
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sys.stderr.write( \
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'-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 == '-n':
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norecord = 1
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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 == '-P':
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preallocspace = 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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# Check excess arguments
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# If norecord is on, refuse filename arguments
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if norecord:
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if args:
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sys.stdout = sys.stderr
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print 'With -n, no filename arguments are used\n'
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usage()
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sys.exit(2)
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elif args[2:]:
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sys.stdout = sys.stderr
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print 'Too many filename arguments\n'
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usage()
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sys.exit(2)
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# Process file arguments
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if args:
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filename = args[0]
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else:
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@ -133,6 +163,8 @@ def main():
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if norecord:
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filename = audiofilename = ''
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# Open video
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v = sv.OpenVideo()
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# Determine maximum window size based on signal standard
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param = [SV.BROADCAST, 0]
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@ -181,7 +213,7 @@ 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, release it to stop'
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help()
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while 1:
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dev, val = gl.qread()
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