mirror of https://github.com/python/cpython
274 lines
5.9 KiB
Python
Executable File
274 lines
5.9 KiB
Python
Executable File
#! /ufs/guido/bin/sgi/python
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# Universal (non-interactive) CMIF video file copier.
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# Possibilities:
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#
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# - Manipulate the time base:
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# = resample at a fixed rate
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# = divide the time codes by a speed factor (to make it go faster/slower)
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# = drop frames that are less than n msec apart (to accomodate slow players)
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# - Convert to a different format
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# - Magnify (scale) the image
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# Usage function (keep this up-to-date if you change the program!)
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def usage():
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print 'Usage: Vcopy [options] [infile [outfile]]'
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print
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print 'Options:'
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print
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print '-t type : new image type (default unchanged)'
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print
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print '-M magnify : image magnification factor (default unchanged)'
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print '-w width : output image width (default height*4/3 if -h used)'
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print '-h height : output image height (default width*3/4 if -w used)'
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print
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print '-p pf : new x and y packfactor (default unchanged)'
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print '-x xpf : new x packfactor (default unchanged)'
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print '-y ypf : new y packfactor (default unchanged)'
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print
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print '-m delta : drop frames closer than delta msec (default 0)'
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print '-r delta : regenerate input time base delta msec apart'
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print '-s speed : speed change factor (default unchanged)'
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print
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print 'infile : input file (default film.video)'
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print 'outfile : output file (default out.video)'
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import sys
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sys.path.append('/ufs/guido/src/video')
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import VFile
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import imgconv
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import imageop
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import getopt
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import string
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# Global options
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speed = 1.0
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mindelta = 0
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regen = None
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newpf = None
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newtype = None
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magnify = None
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newwidth = None
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newheight = None
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# Function to turn a string into a float
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atof_error = 'atof_error' # Exception if it fails
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def atof(s):
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try:
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return float(eval(s))
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except:
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raise atof_error
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# Main program -- mostly command line parsing
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def main():
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global speed, mindelta, regen, newpf, newtype, \
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magnify, newwidth, newheight
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# Parse command line
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try:
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opts, args = getopt.getopt(sys.argv[1:], \
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'M:h:m:p:r:s:t:w:x:y:')
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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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xpf = ypf = None
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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 == '-M': magnify = atof(arg)
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if opt == '-h': height = string.atoi(arg)
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if opt == '-m': mindelta = string.atoi(arg)
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if opt == '-p': xpf = ypf = string.atoi(arg)
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if opt == '-r': regen = string.atoi(arg)
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if opt == '-s': speed = atof(arg)
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if opt == '-t': newtype = arg
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if opt == '-w': newwidth = string.atoi(arg)
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if opt == '-x': xpf = string.atoi(arg)
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if opt == '-y': ypf = 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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except atof_error:
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sys.stdout = sys.stderr
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print 'Option', opt, 'requires float argument'
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sys.exit(2)
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if xpf or ypf:
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newpf = (xpf, ypf)
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if newwidth or newheight:
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if magnify:
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sys.stdout = sys.stderr
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print 'Options -w or -h are incompatible with -M'
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sys.exit(2)
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if not newheight:
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newheight = newwidth * 3 / 4
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elif not newwidth:
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newwidth = newheight * 4 / 3
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# Check filename arguments
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if len(args) < 1:
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args.append('film.video')
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if len(args) < 2:
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args.append('out.video')
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if len(args) > 2:
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usage()
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sys.exit(2)
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if args[0] == args[1]:
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sys.stderr.write('Input file can\'t be output file\n')
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sys.exit(2)
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# Do the right thing
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sts = process(args[0], args[1])
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# Exit
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sys.exit(sts)
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# Copy one file to another
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def process(infilename, outfilename):
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global newwidth, newheight, newpf
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try:
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vin = VFile.BasicVinFile().init(infilename)
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except IOError, msg:
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sys.stderr.write(infilename + ': I/O error: ' + `msg` + '\n')
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return 1
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except VFile.Error, msg:
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sys.stderr.write(msg + '\n')
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return 1
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except EOFError:
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sys.stderr.write(infilename + ': EOF in video file\n')
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return 1
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try:
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vout = VFile.BasicVoutFile().init(outfilename)
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except IOError, msg:
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sys.stderr.write(outfilename + ': I/O error: ' + `msg` + '\n')
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return 1
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vin.printinfo()
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vout.setinfo(vin.getinfo())
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scale = 0
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flip = 0
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if newtype:
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vout.setformat(newtype)
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try:
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convert = imgconv.getconverter(vin.format, vout.format)
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except imgconv.error, msg:
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sys.stderr.write(str(msg) + '\n')
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return 1
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if newpf:
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xpf, ypf = newpf
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if not xpf: xpf = vin.xpf
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if not ypf: ypf = vout.ypf
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newpf = (xpf, ypf)
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vout.setpf(newpf)
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scale = 1
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if newwidth and newheight:
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scale = 1
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if vin.upside_down <> vout.upside_down or \
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vin.mirror_image <> vout.mirror_image:
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flip = 1
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inwidth, inheight = vin.getsize()
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inwidth = inwidth / vin.xpf
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inheight = inheight / vin.ypf
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if magnify:
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newwidth = int(vout.width * magnify)
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newheight = int(vout.height * magnify)
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scale = 1
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if scale:
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vout.setsize(newwidth, newheight)
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else:
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newwidth, newheight = vout.getsize()
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if vin.packfactor <> vout.packfactor:
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scale = 1
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if scale or flip:
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if vout.bpp not in (8, 32):
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sys.stderr.write('Can\'t scale or flip this type\n')
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return 1
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newwidth = newwidth / vout.xpf
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newheight = newheight / vout.ypf
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vout.printinfo()
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vout.writeheader()
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told = 0
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nin = 0
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nout = 0
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tin = 0
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tout = 0
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while 1:
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try:
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tin, data, cdata = vin.getnextframe()
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except EOFError:
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break
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nin = nin + 1
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if regen:
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tout = nin * regen
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else:
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tout = tin
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tout = int(tout / speed)
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if tout - told < mindelta:
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continue
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told = tout
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if newtype:
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data = convert(data, inwidth, inheight)
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if scale:
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data = imageop.scale(data, vout.bpp/8, \
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inwidth, inheight, newwidth, newheight)
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if flip:
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x0, y0 = 0, 0
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x1, y1 = newwidth-1, neheight-1
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if vin.upside_down <> vout.upside_down:
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y1, y0 = y0, y1
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if vin.mirror_image <> vout.mirror_image:
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x1, x0 = x0, x1
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data = imageop.crop(data, vout.bpp/8, \
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newwidth, newheight, x0, y0, x1, y1)
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vout.writeframe(tout, data, cdata)
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nout = nout + 1
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vout.close()
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vin.close()
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# Don't forget to call the main program
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try:
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main()
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except KeyboardInterrupt:
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print '[Interrupt]'
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