| #!/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() |