Create CMIF-video file from SGI rgb images

Demo/sgi/video/rgb2video.py

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+import sys
+import VFile
+import getopt
+import imgfile
+import string
+
+def main():
+	format = None
+	interval = 40
+	outfile = 'film.video'
+
+	try:
+		opts, args = getopt.getopt(sys.argv[1:], 'f:i:o:')
+	except getopt.error:
+		usage()
+		sys.exit(1)
+	for opt, arg in opts:
+		if opt == '-f':
+			format = arg
+		elif opt == '-i':
+			interval = string.atoi(arg)
+		elif opt == '-o':
+			outfile = arg
+		else:
+			usage()
+			sys.exit(1)
+	if not args:
+		usage()
+		sys.exit(1)
+	
+	xsize, ysize, zsize = imgfile.getsizes(args[0])
+	nxsize = xsize
+	
+	if not format:
+		if zsize == 3:
+			format = 'rgb'
+		elif zsize == 1:
+			format = 'grey'
+			if xsize % 4:
+				addbytes = 4-(xsize%4)
+				nxsize = xsize + addbytes
+				print 'rgb2video: add',addbytes,'pixels per line'
+		else:
+			print 'rgb2video: incorrect number of planes:',zsize
+			sys.exit(1)
+
+	vout = VFile.VoutFile().init(outfile)
+	vout.format = format
+	vout.width = nxsize
+	vout.height = ysize
+	vout.writeheader()
+	t = 0
+	sys.stderr.write('Processing ')
+	for img in args:
+		sys.stderr.write(img + ' ')
+		if imgfile.getsizes(img) <> (xsize, ysize, zsize):
+			print 'rgb2video: Image is different size:', img
+			sys.exit(1)
+		data = imgfile.read(img)
+		if xsize <> nxsize:
+			ndata = ''
+			for i in range(0,len(data), xsize):
+				curline = data[i:i+xsize]
+				ndata = ndata + curline + ('\0'*(nxsize-xsize))
+			data = ndata
+		vout.writeframe(t, data, None)
+		t = t + interval
+	sys.stderr.write('\n')
+	vout.close()
+
+def usage():
+	print 'Usage: rgb2video [-o output] [-i frameinterval] [-f format] rgbfile ...'
+	
+main()
+