libvips/python/test/testvipsCC.py

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#!/usr/bin/python
import sys
# just need this for leaktesting
import gc
from vipsCC import *
if len (sys.argv) != 3:
print 'usage:', sys.argv[0], 'inputimage outputimage'
print '\tcalculate photographic negative of inputimage'
sys.exit (1)
try:
a = VImage.VImage (sys.argv[1])
b = a.invert ()
c = b.lin ([1,2,3],[4,5,6])
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m = VMask.VIMask (3, 3, 1, 0,
[-1, -1, -1,
-1, 8, -1,
-1, -1, -1])
d = a.conv (m)
d.write (sys.argv[2])
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except VError.VError, e:
e.perror (sys.argv[0])
# we can get properties of VImage too
print 'inputimage is', a.Xsize (), 'pixels across'
print 'starting shutdown ...'
del b
del a
del c
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del d
del m
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# sometimes have to do several GCs to get them all, not sure why
for i in range(10):
gc.collect ()
print 'shutdown!'
print 'leaked IMAGEs:'
VImage.im__print_all ()
print 'done ... hopefully you saw no leaks'