/[escript]/trunk/tools/vizTools/make_movie.py
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revision 123 by jgs, Fri Jul 8 04:08:13 2005 UTC revision 150 by jgs, Thu Sep 15 03:44:45 2005 UTC
# Line 1  Line 1 
1  #!/usr/bin/env python  #!/usr/bin/env python
2    
3    # $Id$
4    
5  """  """
6  Make an mpeg movie from the pnm files in the current directory  Make an mpeg movie from the pnm files in the specified directory
7  """  """
8    
9  import os, sys, re  import os, sys, re
10  import getopt  import getopt
11    
12  (opts, args) = getopt.getopt(sys.argv[1:],  (opts, args) = getopt.getopt(sys.argv[1:],
13      "s:o:f:h",      "s:d:o:f:p:h",
14      ["framestem=", "output=", "format=", "help"],      ["framestem=", "dirname=", "output=", "format=", "pad=", "help"],
15      )      )
16    
17  def usage():  def usage():
18      print "Usage:"      print "Usage:"
19      print "  make_movie -s <framestem> -o <output filename> -f <format>\n"      print "  make_movie -s <framestem> -o <output filename> -f <format> -p <pad>\n"
20      print "  Arguments:"      print "  Arguments:"
21      print "    -s/--framestem: The frame filename stem (the stuff before .pnm) (required)"      print "    -s/--framestem: The frame filename stem (the stuff before .pnm) (required)"
22        print "    -d/--dirname: The directory of frames (optional)"
23      print "    -o/--output: Output mpeg filename (optional)"      print "    -o/--output: Output mpeg filename (optional)"
24      print "    -f/--format: Input frame image format (optional)"      print "    -f/--format: Input frame image format (optional)"
25        print "    -p/--pad: How many frames to pad the movie (optional)"
26    
27    dirname = "./"
28  mpegName = None  mpegName = None
29  fnameStem = None  fnameStem = None
30  format = "pnm"  # if format not specified assume pnm  format = "pnm"  # if format not specified assume pnm
31    pad = 1
32    
33  for option, arg in opts:  for option, arg in opts:
34      if option in ('-s', '--stem'):      if option in ('-s', '--stem'):
35      fnameStem = arg      fnameStem = arg
36        elif option in ('-d', '--dirname'):
37        dirname = arg
38      elif option in ('-o', '--output'):      elif option in ('-o', '--output'):
39      mpegName = arg      mpegName = arg
40      elif option in ('-f', '--format'):      elif option in ('-f', '--format'):
41      format = arg      format = arg
42        elif option in ('-p', '--pad'):
43        pad = int(arg)
44      elif option in ('-h', '--help'):      elif option in ('-h', '--help'):
45      usage()      usage()
46      sys.exit(0)      sys.exit(0)
# Line 43  if mpegName is None: Line 53  if mpegName is None:
53      mpegName = fnameStem + ".mpg"      mpegName = fnameStem + ".mpg"
54    
55  # determine the number of files to convert  # determine the number of files to convert
56  dirList = os.listdir('./')  dirList = os.listdir(dirname)
57  r = re.compile( "%s\\d+\\.%s"%(fnameStem,format) )  r = re.compile( "%s\\d+\\.%s"%(fnameStem,format) )
58  count = 0  # counter for the number of files found  count = 0  # counter for the number of files found
59  fnames = []  fnames = []
# Line 52  for fname in dirList: Line 62  for fname in dirList:
62      fnames.append(fname)      fnames.append(fname)
63      count += 1      count += 1
64    
65    if count == 0:
66        raise ValueError, "No matching files found"
67    
68  # do a conversion if necessary  # do a conversion if necessary
69  if format != "pnm":  if format != "pnm":
70      print "Converting frames to pnm"      print "Converting frames to pnm"
# Line 61  if format != "pnm": Line 74  if format != "pnm":
74      front = r.findall(fname)      front = r.findall(fname)
75      front = front[0]      front = front[0]
76      # make the conversion string to pass to 'convert'      # make the conversion string to pass to 'convert'
77      convString = "convert %s%s %spnm" % (front, format, front)      convString = "convert %s/%s%s %s/%spnm" % \
78            (dirname, front, format, dirname, front)
79      retVal = os.system(convString)      retVal = os.system(convString)
80      if retVal != 0:      if retVal != 0:
81          raise SystemError, "Conversion of %s%s failed" % (front, format)          raise SystemError, "Conversion of %s%s failed" % (front, format)
# Line 100  fnames.sort() Line 114  fnames.sort()
114  firstFile = fnames[0]  firstFile = fnames[0]
115  lastFile = fnames[-1]  lastFile = fnames[-1]
116    
117  r = re.compile("([a-zA-Z])(\\d+)(\\.\\w+)")  r = re.compile("([a-zA-Z-_\.\d])(\\d+)(\\.\\w+)$")
118  firstNum = r.findall(firstFile)  firstNum = r.findall(firstFile)
119  firstNum = firstNum[0][1]  firstNum = firstNum[0][1]
120  lastNum = r.findall(lastFile)  lastNum = r.findall(lastFile)
121  lastNum = lastNum[0][1]  lastNum = lastNum[0][1]
122    
123    
124  # finish off the params file string  # finish off the params file string
125  paramsFileString += "%s*.pnm [%s-%s]\n" % (fnameStem, firstNum, lastNum)  if pad == 1:
126        paramsFileString += "%s/%s*.pnm [%s-%s]\n" % \
127            (dirname, fnameStem, firstNum, lastNum)
128    elif pad > 1:
129        # positive padding: add duplicate frames (slow the movie down)
130        for i in range(int(firstNum), int(lastNum)+1):
131        for j in range(pad):
132            paramsFileString += "%s/%s%04d.pnm\n" % (dirname, fnameStem, i)
133    elif pad < 1:
134        # negative padding: i.e. remove frames (speed the movie up)
135        for i in range(int(firstNum), int(lastNum)+1, abs(pad)):
136        paramsFileString += "%s/%s%04d.pnm\n" % (dirname, fnameStem, i)
137    
138  paramsFileString += """END_INPUT  paramsFileString += """END_INPUT
139  PIXEL HALF  PIXEL HALF
# Line 115  ASPECT_RATIO 1 Line 141  ASPECT_RATIO 1
141  """  """
142    
143  # write the string to file  # write the string to file
144  fp = open( "%s.params" % (fnameStem,), "w" )  fp = open( "%s/%s.params" % (dirname,fnameStem,), "w" )
145  fp.write(paramsFileString + '\n')  fp.write(paramsFileString + '\n')
146  fp.close()  fp.close()
147  print "Done params file generation"  print "Done params file generation"
148    
149  # now do the conversion to mpeg  # now do the conversion to mpeg
150  print "Performing conversion to mpeg"  print "Performing conversion to mpeg"
151  convertString = "ppmtompeg %s.params" % (fnameStem,)  convertString = "ppmtompeg %s/%s.params" % (dirname, fnameStem)
152  result = os.system(convertString)  result = os.system(convertString)
153  if result != 0:  if result != 0:
154      print "An error occurred in mpeg conversion"      print "An error occurred in mpeg conversion"
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