#
# The Python Imaging Library
# $Id$
#
# split an animation into a number of frame files
#
from __future__ import print_function
from PIL import Image
import os, sys
class Interval:
def __init__(self, interval = "0"):
self.setinterval(interval)
def setinterval(self, interval):
self.hilo = []
for s in interval.split(","):
if not s.strip():
continue
try:
v = int(s)
if v < 0:
lo, hi = 0, -v
else:
lo = hi = v
except ValueError:
i = s.find("-")
lo, hi = int(s[:i]), int(s[i+1:])
self.hilo.append((hi, lo))
if not self.hilo:
self.hilo = [(sys.maxsize, 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(",".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 True:
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")