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
|
#!/usr/bin/env python3
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2020, Google Inc.
#
# Author: Paul Elder <paul.elder@ideasonboard.com>
#
# v4l2_compat_test.py - Test the V4L2 compatibility layer
import argparse
import glob
import os
from packaging import version
import re
import shutil
import signal
import subprocess
import sys
MIN_V4L_UTILS_VERSION = version.parse("1.21.0")
TestPass = 0
TestFail = -1
TestSkip = 77
supported_pipelines = [
'bcm2835-isp',
'uvcvideo',
'vimc',
]
def grep(exp, arr):
return [s for s in arr if re.search(exp, s)]
def run_with_stdout(*args, env={}):
try:
with open(os.devnull, 'w') as devnull:
output = subprocess.check_output(args, env=env, stderr=devnull)
ret = 0
except subprocess.CalledProcessError as err:
output = err.output
ret = err.returncode
return ret, output.decode('utf-8').split('\n')
def extract_result(result):
res = result.split(', ')
ret = {}
ret['total'] = int(res[0].split(': ')[-1])
ret['succeeded'] = int(res[1].split(': ')[-1])
ret['failed'] = int(res[2].split(': ')[-1])
ret['warnings'] = int(res[3].split(': ')[-1])
ret['device'] = res[0].split()[4].strip(':')
ret['driver'] = res[0].split()[2]
return ret
def test_v4l2_compliance(v4l2_compliance, ld_preload, device, base_driver):
ret, output = run_with_stdout(v4l2_compliance, '-s', '-d', device, env={'LD_PRELOAD': ld_preload})
if ret < 0:
output.append(f'Test for {device} terminated due to signal {signal.Signals(-ret).name}')
return TestFail, output
result = extract_result(output[-2])
if result['failed'] == 0:
return TestPass, output
# vimc will fail s_fmt because it only supports framesizes that are
# multiples of 3
if base_driver == 'vimc' and result['failed'] == 1:
failures = grep('fail', output)
if re.search('S_FMT cannot handle an invalid format', failures[0]) is None:
return TestFail, output
return TestPass, output
return TestFail, output
def main(argv):
parser = argparse.ArgumentParser()
parser.add_argument('-a', '--all', action='store_true',
help='Test all available cameras')
parser.add_argument('-s', '--sanitizer', type=str,
help='Path to the address sanitizer (ASan) runtime')
parser.add_argument('-v', '--verbose', action='store_true',
help='Make the output verbose')
parser.add_argument('v4l2_compat', type=str,
help='Path to v4l2-compat.so')
args = parser.parse_args(argv[1:])
# Compute the LD_PRELOAD value by first loading ASan (if specified) and
# then the V4L2 compat layer.
ld_preload = []
if args.sanitizer:
ld_preload.append(args.sanitizer)
ld_preload.append(args.v4l2_compat)
ld_preload = ':'.join(ld_preload)
v4l2_compliance = shutil.which('v4l2-compliance')
if v4l2_compliance is None:
print('v4l2-compliance is not available')
return TestSkip
ret, out = run_with_stdout(v4l2_compliance, '--version')
if ret != 0 or version.parse(out[0].split()[1].replace(',', '')) < MIN_V4L_UTILS_VERSION:
print('v4l2-compliance version >= 1.21.0 required')
return TestSkip
v4l2_ctl = shutil.which('v4l2-ctl')
if v4l2_ctl is None:
print('v4l2-ctl is not available')
return TestSkip
ret, out = run_with_stdout(v4l2_ctl, '--version')
if ret != 0 or version.parse(out[0].split()[-1]) < MIN_V4L_UTILS_VERSION:
print('v4l2-ctl version >= 1.21.0 required')
return TestSkip
dev_nodes = glob.glob('/dev/video*')
if len(dev_nodes) == 0:
print('no video nodes available to test with')
return TestSkip
failed = []
drivers_tested = {}
for device in dev_nodes:
ret, out = run_with_stdout(v4l2_ctl, '-D', '-d', device, env={'LD_PRELOAD': ld_preload})
if ret < 0:
failed.append(device)
print(f'v4l2-ctl failed on {device} with v4l2-compat')
continue
driver = grep('Driver name', out)[0].split(':')[-1].strip()
if driver != "libcamera":
continue
ret, out = run_with_stdout(v4l2_ctl, '-D', '-d', device)
if ret < 0:
failed.append(device)
print(f'v4l2-ctl failed on {device} without v4l2-compat')
continue
driver = grep('Driver name', out)[0].split(':')[-1].strip()
if driver not in supported_pipelines:
continue
# TODO: Add kernel version check when vimc supports scaling
if driver == "vimc":
continue
if not args.all and driver in drivers_tested:
continue
print(f'Testing {device} with {driver} driver... ', end='')
ret, msg = test_v4l2_compliance(v4l2_compliance, ld_preload, device, driver)
if ret == TestFail:
failed.append(device)
print('failed')
else:
print('success')
if ret == TestFail or args.verbose:
print('\n'.join(msg))
drivers_tested[driver] = True
if len(drivers_tested) == 0:
print(f'No compatible drivers found')
return TestSkip
if len(failed) > 0:
print(f'Failed {len(failed)} tests:')
for device in failed:
print(f'- {device}')
return TestPass if not failed else TestFail
if __name__ == '__main__':
sys.exit(main(sys.argv))
|
