1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import absolute_import, print_function
import os
from nose.tools import eq_, raises
import mapnik
from .utilities import execution_path, run_all
def setup():
# All of the paths used are relative, if we run the tests
# from another directory we need to chdir()
os.chdir(execution_path('.'))
if mapnik.has_webp():
tmp_dir = '/tmp/mapnik-webp/'
if not os.path.exists(tmp_dir):
os.makedirs(tmp_dir)
opts = [
'webp',
'webp:method=0',
'webp:method=6',
'webp:quality=64',
'webp:alpha=false',
'webp:partitions=3',
'webp:preprocessing=1',
'webp:partition_limit=50',
'webp:pass=10',
'webp:alpha_quality=50',
'webp:alpha_filtering=2',
'webp:alpha_compression=0',
'webp:autofilter=0',
'webp:filter_type=1:autofilter=1',
'webp:filter_sharpness=4',
'webp:filter_strength=50',
'webp:sns_strength=50',
'webp:segments=3',
'webp:target_PSNR=.5',
'webp:target_size=100'
]
def gen_filepath(name, format):
return os.path.join('images/support/encoding-opts',
name + '-' + format.replace(":", "+") + '.webp')
def test_quality_threshold():
im = mapnik.Image(256, 256)
im.tostring('webp:quality=99.99000')
im.tostring('webp:quality=0')
im.tostring('webp:quality=0.001')
@raises(RuntimeError)
def test_quality_threshold_invalid():
im = mapnik.Image(256, 256)
im.tostring('webp:quality=101')
@raises(RuntimeError)
def test_quality_threshold_invalid2():
im = mapnik.Image(256, 256)
im.tostring('webp:quality=-1')
@raises(RuntimeError)
def test_quality_threshold_invalid3():
im = mapnik.Image(256, 256)
im.tostring('webp:quality=101.1')
generate = os.environ.get('UPDATE')
def test_expected_encodings():
fails = []
try:
for opt in opts:
im = mapnik.Image(256, 256)
expected = gen_filepath('blank', opt)
actual = os.path.join(tmp_dir, os.path.basename(expected))
if generate or not os.path.exists(expected):
print('generating expected image', expected)
im.save(expected, opt)
im.save(actual, opt)
try:
expected_bytes = mapnik.Image.open(expected).tostring()
except RuntimeError:
# this will happen if libweb is old, since it cannot open
# images created by more recent webp
print(
'warning, cannot open webp expected image (your libwebp is likely too old)')
continue
if mapnik.Image.open(actual).tostring() != expected_bytes:
fails.append(
'%s (actual) not == to %s (expected)' %
(actual, expected))
for opt in opts:
im = mapnik.Image(256, 256)
im.fill(mapnik.Color('green'))
expected = gen_filepath('solid', opt)
actual = os.path.join(tmp_dir, os.path.basename(expected))
if generate or not os.path.exists(expected):
print('generating expected image', expected)
im.save(expected, opt)
im.save(actual, opt)
try:
expected_bytes = mapnik.Image.open(expected).tostring()
except RuntimeError:
# this will happen if libweb is old, since it cannot open
# images created by more recent webp
print(
'warning, cannot open webp expected image (your libwebp is likely too old)')
continue
if mapnik.Image.open(actual).tostring() != expected_bytes:
fails.append(
'%s (actual) not == to %s (expected)' %
(actual, expected))
for opt in opts:
im = mapnik.Image.open(
'images/support/transparency/aerial_rgba.png')
expected = gen_filepath('aerial_rgba', opt)
actual = os.path.join(tmp_dir, os.path.basename(expected))
if generate or not os.path.exists(expected):
print('generating expected image', expected)
im.save(expected, opt)
im.save(actual, opt)
try:
expected_bytes = mapnik.Image.open(expected).tostring()
except RuntimeError:
# this will happen if libweb is old, since it cannot open
# images created by more recent webp
print(
'warning, cannot open webp expected image (your libwebp is likely too old)')
continue
if mapnik.Image.open(actual).tostring() != expected_bytes:
fails.append(
'%s (actual) not == to %s (expected)' %
(actual, expected))
# disabled to avoid failures on ubuntu when using old webp packages
# eq_(fails,[],'\n'+'\n'.join(fails))
except RuntimeError as e:
print(e)
def test_transparency_levels():
try:
# create partial transparency image
im = mapnik.Image(256, 256)
im.fill(mapnik.Color('rgba(255,255,255,.5)'))
c2 = mapnik.Color('rgba(255,255,0,.2)')
c3 = mapnik.Color('rgb(0,255,255)')
for y in range(0, int(im.height() / 2)):
for x in range(0, int(im.width() / 2)):
im.set_pixel(x, y, c2)
for y in range(int(im.height() / 2), im.height()):
for x in range(int(im.width() / 2), im.width()):
im.set_pixel(x, y, c3)
t0 = tmp_dir + 'white0-actual.webp'
# octree
format = 'webp'
expected = 'images/support/transparency/white0.webp'
if generate or not os.path.exists(expected):
im.save('images/support/transparency/white0.webp')
im.save(t0, format)
im_in = mapnik.Image.open(t0)
t0_len = len(im_in.tostring(format))
try:
expected_bytes = mapnik.Image.open(expected).tostring(format)
except RuntimeError:
# this will happen if libweb is old, since it cannot open
# images created by more recent webp
print(
'warning, cannot open webp expected image (your libwebp is likely too old)')
return
eq_(t0_len, len(expected_bytes))
except RuntimeError as e:
print(e)
if __name__ == "__main__":
setup()
exit(run_all(eval(x) for x in dir() if x.startswith("test_")))
|
