blob: e5fbba50699a1a4ef3aa42ec885ea385421b7b94 [file] [log] [blame]
# Copyright 2014 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import math
import its.caps
import its.device
import its.objects
import its.target
def main():
"""Test the validity of some metadata entries.
Looks at capture results and at the camera characteristics objects.
"""
global md, props, failed
with its.device.ItsSession() as cam:
# Arbitrary capture request exposure values; image content is not
# important for this test, only the metadata.
props = cam.get_camera_properties()
auto_req = its.objects.auto_capture_request()
cap = cam.do_capture(auto_req)
md = cap["metadata"]
print "Hardware level"
print " Legacy:", its.caps.legacy(props)
print " Limited:", its.caps.limited(props)
print " Full or better:", its.caps.full_or_better(props)
print "Capabilities"
print " Manual sensor:", its.caps.manual_sensor(props)
print " Manual post-proc:", its.caps.manual_post_proc(props)
print " Raw:", its.caps.raw(props)
print " Sensor fusion:", its.caps.sensor_fusion(props)
# Test: hardware level should be a valid value.
check('props.has_key("android.info.supportedHardwareLevel")')
check('props["android.info.supportedHardwareLevel"] is not None')
check('props["android.info.supportedHardwareLevel"] in [0,1,2,3]')
full = getval('props["android.info.supportedHardwareLevel"]') == 1
manual_sensor = its.caps.manual_sensor(props)
# Test: rollingShutterSkew, and frameDuration tags must all be present,
# and rollingShutterSkew must be greater than zero and smaller than all
# of the possible frame durations.
if manual_sensor:
check('md.has_key("android.sensor.frameDuration")')
check('md["android.sensor.frameDuration"] is not None')
check('md.has_key("android.sensor.rollingShutterSkew")')
check('md["android.sensor.rollingShutterSkew"] is not None')
if manual_sensor:
check('md["android.sensor.frameDuration"] > '
'md["android.sensor.rollingShutterSkew"] > 0')
# Test: timestampSource must be a valid value.
check('props.has_key("android.sensor.info.timestampSource")')
check('props["android.sensor.info.timestampSource"] is not None')
check('props["android.sensor.info.timestampSource"] in [0,1]')
# Test: croppingType must be a valid value, and for full devices, it
# must be FREEFORM=1.
check('props.has_key("android.scaler.croppingType")')
check('props["android.scaler.croppingType"] is not None')
check('props["android.scaler.croppingType"] in [0,1]')
assert(not failed)
if not its.caps.legacy(props):
# Test: pixel_pitch, FOV, and hyperfocal distance are reasonable
fmts = props["android.scaler.streamConfigurationMap"]["availableStreamConfigurations"]
fmts = sorted(fmts, key=lambda k: k["width"]*k["height"], reverse=True)
sensor_size = props["android.sensor.info.physicalSize"]
pixel_pitch_h = (sensor_size["height"] / fmts[0]["height"] * 1E3)
pixel_pitch_w = (sensor_size["width"] / fmts[0]["width"] * 1E3)
print "Assert pixel_pitch WxH: %.2f um, %.2f um" % (pixel_pitch_w,
pixel_pitch_h)
assert 1.0 <= pixel_pitch_w <= 10
assert 1.0 <= pixel_pitch_h <= 10
assert 0.333 <= pixel_pitch_w/pixel_pitch_h <= 3.0
diag = math.sqrt(sensor_size["height"] ** 2 +
sensor_size["width"] ** 2)
fl = md["android.lens.focalLength"]
fov = 2 * math.degrees(math.atan(diag / (2 * fl)))
print "Assert field of view: %.1f degrees" % fov
assert 30 <= fov <= 130
if its.caps.lens_approx_calibrated(props):
diopter_hyperfocal = props["android.lens.info.hyperfocalDistance"]
if diopter_hyperfocal != 0.0:
hyperfocal = 1.0 / diopter_hyperfocal
print "Assert hyperfocal distance: %.2f m" % hyperfocal
assert 0.02 <= hyperfocal
def getval(expr, default=None):
try:
return eval(expr)
except:
return default
failed = False
def check(expr):
global md, props, failed
try:
if eval(expr):
print "Passed>", expr
else:
print "Failed>>", expr
failed = True
except:
print "Failed>>", expr
failed = True
if __name__ == '__main__':
main()