diff options
| -rwxr-xr-x | Demo/sgi/video/Vrec.py | 188 |
1 files changed, 110 insertions, 78 deletions
diff --git a/Demo/sgi/video/Vrec.py b/Demo/sgi/video/Vrec.py index 689e8cf..d952566 100755 --- a/Demo/sgi/video/Vrec.py +++ b/Demo/sgi/video/Vrec.py @@ -1,49 +1,50 @@ -#! /ufs/guido/bin/sgi/python-405 #! /ufs/guido/bin/sgi/python +#! /ufs/guido/bin/sgi/python-405 # Capture a CMIF movie using the Indigo video library and board +# The CMIF video file format is documented in cmif-film.ms. +# Audio data is recorded in AIFF format, using the input sampling +# rate, source and volume set by the audio panel, in mono, 8 +# bits/sample. + + +# Usage and help functions (keep this up-to-date if you change the program!) + +def usage(): + print 'Usage: Vrec [options] [moviefile [audiofile]]' + print + print 'Options:' + print '-a : record audio as well' + print '-q queuesize : set the capture queue size (default 2)' + print '-r rate : capture 1 out of every "rate" frames', \ + '(default and min 2)' + print '-w width : initial window width', \ + '(default interactive placement)' + print '-n : Don\'t write to file, only timing info' + print '-d : drop fields if needed' + print '-g bits : greyscale (2, 4 or 8 bits)' + print '-G : 2-bit greyscale dithered' + print '-m : monochrome dithered' + print '-M value : monochrome tresholded with value' + print '-f : Capture fields (in stead of frames)' + print '-P frames : preallocate space for "frames" frames' + print 'moviefile : here goes the movie data (default film.video)' + print 'audiofile : with -a, here goes the audio data', \ + '(default film.aiff)' + +def help(): + print 'Press the left mouse button to start recording, release it to' + print 'end recording. You can record as many times as you wish, but' + print 'each recording overwrites the output file(s) -- only the last' + print 'recording is kept.' + print + print 'Press ESC or use the window manager Quit or Close window option' + print 'to quit. If you quit before recording anything, the output' + print 'file(s) are not touched.' -# Usage: -# -# makemovie [-a] [-q queuesize] [-r rate] [-w width] [moviefile [audiofile]] - - -# Options: -# -# -a : record audio as well -# -q queuesize : set the capture queue size (default 2) -# -r rate : capture 1 out of every 'rate' frames (default and min 2) -# -w width : initial window width (default interactive placement) -# -n : Don't write to file, only timing info -# -d : drop fields if needed -# -g bits : greyscale (2, 4 or 8 bits) -# -G : 2-bit greyscale dithered -# -m : monochrome dithered -# -M value : monochrome tresholded with value -# -f : Capture fields (in stead of frames) -# -P frames : preallocate space for 'frames' frames -# -# moviefile : here goes the movie data (default film.video); -# the format is documented in cmif-film.ms -# audiofile : with -a, here goes the audio data (default film.aiff); -# audio data is recorded in AIFF format, using the -# input sampling rate, source and volume set by the -# audio panel, in mono, 8 bits/sample - - -# User interface: -# -# Start the application. Resize the window to the desired movie size. -# Press the left mouse button to start recording, release it to end -# recording. You can record as many times as you wish, but each time -# you overwrite the output file(s), so only the last recording is -# kept. -# -# Press ESC or select the window manager Quit or Close window option -# to quit. If you quit before recording anything, the output file(s) -# are not touched. +# Imported modules import sys sys.path.append('/ufs/guido/src/video') @@ -58,6 +59,7 @@ import string import imageop import sgi + # Main program def main(): @@ -75,45 +77,73 @@ def main(): fields = 0 preallocspace = 0 - opts, args = getopt.getopt(sys.argv[1:], 'aq:r:w:ndg:mM:GfP:') - for opt, arg in opts: - if opt == '-a': - audio = 1 - elif opt == '-q': - qsize = string.atoi(arg) - elif opt == '-r': - rate = string.atoi(arg) - if rate < 2: - sys.stderr.write('-r rate must be >= 2\n') - sys.exit(2) - elif opt == '-w': - width = string.atoi(arg) - elif opt == '-n': - norecord = 1 - elif opt == '-d': - drop = 1 - elif opt == '-g': - grey = 1 - greybits = string.atoi(arg) - if not greybits in (2,4,8): - print 'Only 2, 4 or 8 bit greyscale supported' - elif opt == '-G': - grey = 1 - greybits = -2 - elif opt == '-m': - mono = 1 - elif opt == '-M': - mono = 1 - monotreshold = string.atoi(arg) - elif opt == '-f': - fields = 1 - elif opt == '-P': - preallocspace = string.atoi(arg) - - if args[2:]: - sys.stderr.write('usage: Vrec [options] [file [audiofile]]\n') + # Parse command line + try: + opts, args = getopt.getopt(sys.argv[1:], 'aq:r:w:ndg:mM:GfP:') + except getopt.error, msg: + sys.stdout = sys.stderr + print 'Error:', msg, '\n' + usage() + sys.exit(2) + + # Interpret options + try: + for opt, arg in opts: + if opt == '-a': + audio = 1 + elif opt == '-q': + qsize = string.atoi(arg) + elif opt == '-r': + rate = string.atoi(arg) + if rate < 2: + sys.stderr.write( \ + '-r rate must be >= 2\n') + sys.exit(2) + elif opt == '-w': + width = string.atoi(arg) + elif opt == '-n': + norecord = 1 + elif opt == '-d': + drop = 1 + elif opt == '-g': + grey = 1 + greybits = string.atoi(arg) + if not greybits in (2, 4, 8): + sys.stderr.write( \ + 'Only 2, 4 or 8 bit greyscale supported\n') + sys.exit(2) + elif opt == '-G': + grey = 1 + greybits = -2 + elif opt == '-m': + mono = 1 + elif opt == '-M': + mono = 1 + monotreshold = string.atoi(arg) + elif opt == '-f': + fields = 1 + elif opt == '-P': + preallocspace = string.atoi(arg) + except string.atoi_error: + sys.stdout = sys.stderr + print 'Option', opt, 'requires integer argument' sys.exit(2) + # Check excess arguments + # If norecord is on, refuse filename arguments + if norecord: + if args: + sys.stdout = sys.stderr + print 'With -n, no filename arguments are used\n' + usage() + sys.exit(2) + elif args[2:]: + sys.stdout = sys.stderr + print 'Too many filename arguments\n' + usage() + sys.exit(2) + + # Process file arguments if args: filename = args[0] else: @@ -133,6 +163,8 @@ def main(): if norecord: filename = audiofilename = '' + + # Open video v = sv.OpenVideo() # Determine maximum window size based on signal standard param = [SV.BROADCAST, 0] @@ -181,7 +213,7 @@ def main(): gl.qdevice(DEVICE.WINSHUT) gl.qdevice(DEVICE.ESCKEY) - print 'Press left mouse to start recording, release it to stop' + help() while 1: dev, val = gl.qread() |