# # The Python Imaging Library # $Id$ # # split an animation into a number of frame files # import Image import os, string, sys class Interval: def __init__(self, interval = "0"): self.setinterval(interval) def setinterval(self, interval): self.hilo = [] for s in string.split(interval, ","): if not string.strip(s): continue try: v = string.atoi(s) if v < 0: lo, hi = 0, -v else: lo = hi = v except ValueError: i = string.find(s, "-") lo, hi = string.atoi(s[:i]), string.atoi(s[i+1:]) self.hilo.append((hi, lo)) if not self.hilo: self.hilo = [(sys.maxint, 0)] def __getitem__(self, index): for hi, lo in self.hilo: if hi >= index >= lo: return 1 return 0 # -------------------------------------------------------------------- # main program html = 0 if sys.argv[1:2] == ["-h"]: html = 1 del sys.argv[1] if not sys.argv[2:]: print print "Syntax: python explode.py infile template [range]" print print "The template argument is used to construct the names of the" print "individual frame files. The frames are numbered file001.ext," print "file002.ext, etc. You can insert %d to control the placement" print "and syntax of the frame number." print print "The optional range argument specifies which frames to extract." print "You can give one or more ranges like 1-10, 5, -15 etc. If" print "omitted, all frames are extracted." sys.exit(1) infile = sys.argv[1] outfile = sys.argv[2] frames = Interval(string.join(sys.argv[3:], ",")) try: # check if outfile contains a placeholder outfile % 1 except TypeError: file, ext = os.path.splitext(outfile) outfile = file + "%03d" + ext ix = 1 im = Image.open(infile) if html: file, ext = os.path.splitext(outfile) html = open(file+".html", "w") html.write("\n\n") while 1: if frames[ix]: im.save(outfile % ix) print outfile % ix if html: html.write("
\n" % outfile % ix) try: im.seek(ix) except EOFError: break ix = ix + 1 if html: html.write("\n\n")