Demo/sgi/video/Vaddcache.py

   1 #! /usr/bin/env python
   2
   3 # Add a cache to each of the files given as command line arguments
   4
   5
   6 # Usage:
   7 #
   8 # Vaddcache [file] ...
   9
  10
  11 # Options:
  12 #
  13 # file ... : file(s) to modify; default film.video
  14
  15
  16 import sys
  17 sys.path.append('/ufs/guido/src/video')
  18 import VFile
  19 import getopt
  20
  21
  22 # Global options
  23
  24 # None
  25
  26
  27 # Main program -- mostly command line parsing
  28
  29 def main():
  30         opts, args = getopt.getopt(sys.argv[1:], '')
  31         if not args:
  32                 args = ['film.video']
  33         sts = 0
  34         for filename in args:
  35                 if process(filename):
  36                         sts = 1
  37         sys.exit(sts)
  38
  39
  40 # Process one file
  41
  42 def process(filename):
  43         try:
  44                 fp = open(filename, 'r+')
  45                 vin = VFile.RandomVinFile(fp)
  46                 vin.filename = filename
  47         except IOError, msg:
  48                 sys.stderr.write(filename + ': I/O error: ' + `msg` + '\n')
  49                 return 1
  50         except VFile.Error, msg:
  51                 sys.stderr.write(msg + '\n')
  52                 return 1
  53         except EOFError:
  54                 sys.stderr.write(filename + ': EOF in video file\n')
  55                 return 1
  56
  57         try:
  58                 vin.readcache()
  59                 hascache = 1
  60         except VFile.Error:
  61                 hascache = 0
  62
  63         if hascache:
  64                 sys.stderr.write(filename + ': already has a cache\n')
  65                 vin.close()
  66                 return 1
  67
  68         vin.printinfo()
  69         vin.warmcache()
  70         vin.writecache()
  71         vin.close()
  72         return 0
  73
  74
  75 # Don't forget to call the main program
  76
  77 try:
  78         main()
  79 except KeyboardInterrupt:
  80         print '[Interrupt]'