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# 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 its.image
import its.device
import its.objects
import its.target
import its.caps
import os.path
import pprint
def main():
"""Test the validity of some metadata entries.
Looks at capture results and at the camera characteristics objects.
"""
global md, props, failed
NAME = os.path.basename(__file__).split(".")[0]
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()
req,_ = its.objects.get_fastest_manual_capture_settings(props)
cap = cam.do_capture(req, cam.CAP_YUV)
md = cap["metadata"]
print "Hardware level"
print " Legacy:", its.caps.legacy(props)
print " Limited:", its.caps.limited(props)
print " Full:", its.caps.full(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]')
full = getval('props["android.info.supportedHardwareLevel"]') == 1
# Test: rollingShutterSkew, frameDuration, and
# availableMinFrameDurations tags must all be present, and
# rollingShutterSkew must be greater than zero and smaller than all
# of the possible frame durations.
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')
check('props.has_key("android.scaler.availableMinFrameDurations")')
check('props["android.scaler.availableMinFrameDurations"] is not None')
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]')
if full:
check('props["android.scaler.croppingType"] == 1')
assert(not failed)
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()
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