New tool Vfix: truncate the right edge of 'grey' type images to make
the scanline width a multiple of 4.
VFile: use gl.gversion() to distinguish 4.0.1 and 4.0.5 Indigos;
truncate width and height to multiples of packfactor.
Vinfo: add -t to descriptive comment; print '!' after packfactor for
files that should be fixed with Vfix.
diff --git a/Demo/sgi/video/Vfix.py b/Demo/sgi/video/Vfix.py
new file mode 100755
index 0000000..82465bc
--- /dev/null
+++ b/Demo/sgi/video/Vfix.py
@@ -0,0 +1,90 @@
+#!/ufs/guido/bin/sgi/python
+
+# Copy a video file, fixing the line width to be a multiple of 4
+
+
+# Usage:
+#
+# Vfix [infile [outfile]]
+
+
+# Options:
+#
+# infile : input file (default film.video)
+# outfile : output file (default out.video)
+
+
+import sys
+import imageop
+sys.path.append('/ufs/guido/src/video')
+import VFile
+
+
+# Main program -- mostly command line parsing
+
+def main():
+ args = sys.argv[1:]
+ if len(args) < 1:
+ args.append('film.video')
+ if len(args) < 2:
+ args.append('out.video')
+ if len(args) > 2:
+ sys.stderr.write('usage: Vfix [infile [outfile]]\n')
+ sys.exit(2)
+ sts = process(args[0], args[1])
+ sys.exit(sts)
+
+
+# Copy one file to another
+
+def process(infilename, outfilename):
+ try:
+ vin = VFile.BasicVinFile().init(infilename)
+ except IOError, msg:
+ sys.stderr.write(infilename + ': I/O error: ' + `msg` + '\n')
+ return 1
+ except VFile.Error, msg:
+ sys.stderr.write(msg + '\n')
+ return 1
+ except EOFError:
+ sys.stderr.write(infilename + ': EOF in video file\n')
+ return 1
+
+ try:
+ vout = VFile.BasicVoutFile().init(outfilename)
+ except IOError, msg:
+ sys.stderr.write(outfilename + ': I/O error: ' + `msg` + '\n')
+ return 1
+
+ info = vin.getinfo()
+ if info[0] <> 'grey':
+ sys.stderr.write('Vfix: input not in grey format\n')
+ return 1
+ vout.setinfo(info)
+ inwidth, height = vin.getsize()
+ pf = vin.packfactor
+ if (inwidth/pf)%4 == 0:
+ sys.stderr.write('Vfix: fix not necessary\n')
+ return 1
+ outwidth = (inwidth/pf/4)*4*pf
+ print 'inwidth =', inwidth, 'outwidth =', outwidth
+ vout.setsize(outwidth, height)
+ vout.writeheader()
+ n = 0
+ try:
+ while 1:
+ t, data, cdata = vin.getnextframe()
+ n = n + 1
+ sys.stderr.write('Frame ' + `n` + '...')
+ data = imageop.crop(data, 1, inwidth/pf, height/pf, \
+ 0, 0, outwidth/pf-1, height/pf-1)
+ vout.writeframe(t, data, None)
+ sys.stderr.write('\n')
+ except EOFError:
+ pass
+ return 0
+
+
+# Don't forget to call the main program
+
+main()