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authorGuido van Rossum <guido@python.org>1993-02-05 15:34:22 (GMT)
committerGuido van Rossum <guido@python.org>1993-02-05 15:34:22 (GMT)
commit3f2ef09f400524ddb41b1aa4555f924163bfacb9 (patch)
treef4d9b111ee64cb0be05ff206f708a36be7ac2fba /Demo/sgi
parentf0384fdb97c41ff4422a5fbc8b888eaf3f4bfe17 (diff)
downloadcpython-3f2ef09f400524ddb41b1aa4555f924163bfacb9.zip
cpython-3f2ef09f400524ddb41b1aa4555f924163bfacb9.tar.gz
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Added usage() and help() to Vrecb, and turn on -f by default.
Removed duplicate description of -r option from documentation file.
Diffstat (limited to 'Demo/sgi')
-rwxr-xr-xDemo/sgi/video/Vrecb.py134
-rwxr-xr-xDemo/sgi/video/video.doc2
2 files changed, 82 insertions, 54 deletions
diff --git a/Demo/sgi/video/Vrecb.py b/Demo/sgi/video/Vrecb.py
index 6a539f8..84cd5cc 100755
--- a/Demo/sgi/video/Vrecb.py
+++ b/Demo/sgi/video/Vrecb.py
@@ -1,28 +1,7 @@
#! /ufs/guido/bin/sgi/python-405
#! /ufs/guido/bin/sgi/python
-# Capture a continuous CMIF movie using the Indigo video library and board
-
-
-# Usage:
-#
-# makemovie [-r rate] [-w width] [moviefile]
-
-
-# Options:
-#
-# -r rate : capture 1 out of every 'rate' frames (default 1)
-# -w width : initial window width (default interactive placement)
-# -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)
-# -n number : Capture 'number' fields (default 60)
-#
-# moviefile : here goes the movie data (default film.video);
-# the format is documented in cmif-film.ms
+# Capture a CMIF movie using the Indigo video library and board in burst mode
# User interface:
@@ -51,6 +30,38 @@ import string
import imageop
import sgi
+
+# Usage and help functions (keep this up-to-date if you change the program!)
+
+def usage():
+ print 'Usage: Vrecb [options] [moviefile]'
+ print
+ print 'Options:'
+ print '-r rate : capture 1 out of every "rate" frames', \
+ '(default and min 1)'
+ print '-w width : initial window width', \
+ '(default interactive placement)'
+ 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 (instead of frames)'
+ print '-n number : Capture this many frames (default 60)'
+ print 'moviefile : here goes the movie data (default film.video)'
+
+def help():
+ print 'Press the left mouse button to start recording.'
+ print 'Recording time is determined by the -n option.'
+ print 'You can record as many times as you wish, but each'
+ print 'recording overwrites the output file(s) -- only the'
+ print 'last 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.'
+
+
# Main program
def main():
@@ -65,37 +76,55 @@ def main():
fields = 0
number = 60
- opts, args = getopt.getopt(sys.argv[1:], 'r:w:dg:mM:Gfn:')
- for opt, arg in opts:
- if 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 == '-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 == '-n':
- number = string.atoi(arg)
+ try:
+ opts, args = getopt.getopt(sys.argv[1:], 'r:w:dg:mM:Gfn:')
+ except getopt.error, msg:
+ sys.stdout = sys.stderr
+ print 'Error:', msg, '\n'
+ usage()
+ sys.exit(2)
+
+ try:
+ for opt, arg in opts:
+ if opt == '-r':
+ rate = string.atoi(arg)
+ if rate < 1:
+ sys.stderr.write('-r rate must be >= 1\n')
+ sys.exit(2)
+ elif opt == '-w':
+ width = string.atoi(arg)
+ 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 == '-n':
+ number = string.atoi(arg)
+ except string.atoi_error:
+ sys.stdout = sys.stderr
+ print 'Option', opt, 'requires integer argument'
+ sys.exit(2)
+
+ if not fields:
+ print '-f option assumed until Jack fixes it'
+ fields = 1
if args[2:]:
- sys.stderr.write('usage: Vrec [options] [file]\n')
+ sys.stderr.write('usage: Vrecb [options] [file]\n')
sys.exit(2)
if args:
@@ -151,7 +180,7 @@ def main():
gl.qdevice(DEVICE.WINSHUT)
gl.qdevice(DEVICE.ESCKEY)
- print 'Press left mouse to start recording'
+ help()
while 1:
dev, val = gl.qread()
@@ -231,6 +260,7 @@ def record(v, info, filename, mono, grey, greybits, monotreshold, fields):
vout.packfactor = (1,-2)
else:
print 'Sorry, can only save fields at the moment'
+ print '(i.e. you *must* use the -f option)'
gl.wintitle(filename)
return
vout.writeheader()
diff --git a/Demo/sgi/video/video.doc b/Demo/sgi/video/video.doc
index c380a10..982c008 100755
--- a/Demo/sgi/video/video.doc
+++ b/Demo/sgi/video/video.doc
@@ -38,8 +38,6 @@ Options for Vrec:
-q queuesize Set size of the video board circular buffer. A little
experimentation with this may lead to more video being
captured, but not always.
- -r rate Set video rate. A rate of 2 tries to capture every
- second frame, etc.
-P frames Preallocate diskspace for 'frames' images. This may
enable you to capture more frames.