rgb2video.py :  » Language-Interface » ChinesePython » chinesepython2.1.3-0.4 » Demo » sgi » video » Python Open Source

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Python Open Source » Language Interface » ChinesePython 
ChinesePython » chinesepython2.1.3 0.4 » Demo » sgi » video » rgb2video.py
import sys
import VFile
import getopt
import imgfile
import string
import imgconv

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 zsize == 3:
    oformat = 'rgb'
  elif zsize == 1:
    oformat = '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)

  if format == None:
    format = oformat
  cfunc = imgconv.getconverter(oformat, format)

  vout = VFile.VoutFile(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, cfunc(data, nxsize, ysize), None)
    t = t + interval
  sys.stderr.write('\n')
  vout.close()

def usage():
  print 'Usage: rgb2video [-o output] [-i frameinterval] [-f format] rgbfile ...'
  
main()
    
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