#!/usr/bin/env python
##########################################################################
#
+# Copyright 2011 Jose Fonseca
# Copyright 2008-2009 VMware, Inc.
# All Rights Reserved.
#
import sys
import os.path
-import subprocess
import optparse
+import math
+import operator
import Image
+import ImageChops
+import ImageEnhance
thumb_size = 320, 320
-def compare(im, ref):
- import ImageMath
- # See http://www.pythonware.com/library/pil/handbook/imagemath.htm
- mask = ImageMath.eval("min(abs(a - b), 1)", a=im, b=ref)
- gray = ref.convert('L')
- # TODO
+def _compare(ref_image, src_image, delta_image):
+ import subprocess
+ p = subprocess.Popen([
+ 'compare',
+ '-metric', 'AE',
+ '-fuzz', '%u%%' % options.fuzz,
+ '-dissimilarity-threshold', '1',
+ ref_image, src_image, delta_image
+ ], stderr=subprocess.PIPE)
+ _, stderr = p.communicate()
+ try:
+ return int(stderr)
+ except ValueError:
+ return 0xffffffff
+
+
+def compare(ref_image, src_image, delta_image):
+ ref_im = Image.open(ref_image)
+ src_im = Image.open(src_image)
+
+ ref_im = ref_im.convert('RGB')
+ src_im = src_im.convert('RGB')
+
+ diff = ImageChops.difference(src_im, ref_im)
+
+ mask = ImageEnhance.Brightness(diff).enhance(100.0/options.fuzz)
+ mask = mask.convert('L')
+
+ lowlight = Image.new('RGB', src_im.size, (0xff, 0xff, 0xff))
+ highlight = Image.new('RGB', src_im.size, (0xf1, 0x00, 0x1e))
+ delta_im = Image.composite(highlight, lowlight, mask)
+
+ delta_im = Image.blend(src_im, delta_im, 0xcc/255.0)
+ delta_im.save(delta_image)
+
+ # See also http://effbot.org/zone/pil-comparing-images.htm
+ # TODO: this is approximate due to the grayscale conversion
+ h = diff.convert('L').histogram()
+ ae = sum(h[255 * options.fuzz // 100 + 1 : 256])
+ return ae
def surface(html, image):
- if False:
- html.write(' <td><a href="%s"><img src="%s"/></a></td>\n' % (image, image))
- else:
+ if True:
name, ext = os.path.splitext(image)
- thumb = name + '_thumb' + ext
- if not os.path.exists(thumb) and os.path.exists(image):
+ thumb = name + '.thumb' + ext
+ if os.path.exists(image) \
+ and (not os.path.exists(thumb) \
+ or os.path.getmtime(thumb) < os.path.getmtime(image)):
im = Image.open(image)
im.thumbnail(thumb_size)
im.save(thumb)
- html.write(' <td><a href="%s"><img src="%s"/></a></td>\n' % (image, thumb))
+ else:
+ thumb = image
+ html.write(' <td><a href="%s"><img src="%s"/></a></td>\n' % (image, thumb))
+
+
+def is_image(path):
+ return \
+ path.endswith('.png') \
+ and not path.endswith('.diff.png') \
+ and not path.endswith('.thumb.png')
+
+
+def find_images(prefix):
+ prefix = os.path.abspath(prefix)
+ if os.path.isdir(prefix):
+ prefix_dir = prefix
+ else:
+ prefix_dir = os.path.dirname(prefix)
+
+ images = []
+ for dirname, dirnames, filenames in os.walk(prefix_dir, followlinks=True):
+ for filename in filenames:
+ filepath = os.path.join(dirname, filename)
+ if filepath.startswith(prefix) and is_image(filepath):
+ images.append(filepath[len(prefix):])
+
+ return images
def main():
+ global options
+
optparser = optparse.OptionParser(
- usage="\n\t%prog [options] [file] ...",
+ usage="\n\t%prog [options] <ref_prefix> <src_prefix>",
version="%%prog")
optparser.add_option(
'-o', '--output', metavar='FILE',
- type="string", dest="output",
- help="output filename [stdout]")
- optparser.add_option(
- '--start', metavar='FRAME',
- type="int", dest="start", default=1,
- help="start frame [default: %default]")
- optparser.add_option(
- '--stop', metavar='FRAME',
- type="int", dest="stop", default=9999,
- help="stop frame [default: %default]")
+ type="string", dest="output", default='index.html',
+ help="output filename [default: %default]")
optparser.add_option(
'-f', '--fuzz',
- type="string", dest="fuzz", default='5%',
- help="fuzz [default: %default]")
+ type="int", dest="fuzz", default=5,
+ help="fuzz percentage [default: %default]")
+ optparser.add_option(
+ '--overwrite',
+ action="store_true", dest="overwrite", default=False,
+ help="overwrite")
(options, args) = optparser.parse_args(sys.argv[1:])
if len(args) != 2:
optparser.error('incorrect number of arguments')
- ref_prefix = sys.argv[1]
- src_prefix = sys.argv[2]
+ ref_prefix = args[0]
+ src_prefix = args[1]
+
+ ref_images = find_images(ref_prefix)
+ src_images = find_images(src_prefix)
+ images = list(set(ref_images).intersection(set(src_images)))
+ images.sort()
if options.output:
html = open(options.output, 'wt')
html.write('<html>\n')
html.write(' <body>\n')
html.write(' <table border="1">\n')
- html.write(' <tr><th><th>ref</th><th>src</th><th>Δ</th></tr>\n')
- for frame_no in range(options.start, options.stop + 1):
- ref_image = "%s%04u.png" % (ref_prefix, frame_no)
- src_image = "%s%04u.png" % (src_prefix, frame_no)
- delta_image = "%s%04u_diff.png" % (src_prefix, frame_no)
+ html.write(' <tr><th>%s</th><th>%s</th><th>Δ</th></tr>\n' % (ref_prefix, src_prefix))
+ for image in images:
+ ref_image = ref_prefix + image
+ src_image = src_prefix + image
+ root, ext = os.path.splitext(src_image)
+ delta_image = "%s.diff.png" % (root, )
if os.path.exists(ref_image) and os.path.exists(src_image):
+ if options.overwrite \
+ or not os.path.exists(delta_image) \
+ or (os.path.getmtime(delta_image) < os.path.getmtime(ref_image) \
+ and os.path.getmtime(delta_image) < os.path.getmtime(src_image)):
+ compare(ref_image, src_image, delta_image)
+
html.write(' <tr>\n')
- subprocess.call(["compare", '-metric', 'AE', '-fuzz', options.fuzz, ref_image, src_image, delta_image])
surface(html, ref_image)
surface(html, src_image)
surface(html, delta_image)
projects / apitrace / blobdiff