Pillow/Tests/bench_cffi_access.py

59 lines
1.5 KiB
Python

from helper import unittest, PillowTestCase, hopper
# Not running this test by default. No DOS against Travis CI.
from PIL import PyAccess
import time
def iterate_get(size, access):
(w, h) = size
for x in range(w):
for y in range(h):
access[(x, y)]
def iterate_set(size, access):
(w, h) = size
for x in range(w):
for y in range(h):
access[(x, y)] = (x % 256, y % 256, 0)
def timer(func, label, *args):
iterations = 5000
starttime = time.time()
for x in range(iterations):
func(*args)
if time.time()-starttime > 10:
print("%s: breaking at %s iterations, %.6f per iteration" % (
label, x+1, (time.time()-starttime)/(x+1.0)))
break
if x == iterations-1:
endtime = time.time()
print("%s: %.4f s %.6f per iteration" % (
label, endtime-starttime, (endtime-starttime)/(x+1.0)))
class BenchCffiAccess(PillowTestCase):
def test_direct(self):
im = hopper()
im.load()
# im = Image.new( "RGB", (2000, 2000), (1, 3, 2))
caccess = im.im.pixel_access(False)
access = PyAccess.new(im, False)
self.assertEqual(caccess[(0, 0)], access[(0, 0)])
print("Size: %sx%s" % im.size)
timer(iterate_get, 'PyAccess - get', im.size, access)
timer(iterate_set, 'PyAccess - set', im.size, access)
timer(iterate_get, 'C-api - get', im.size, caccess)
timer(iterate_set, 'C-api - set', im.size, caccess)
if __name__ == '__main__':
unittest.main()