| # 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 time |
| |
| import its.caps |
| import its.device |
| import its.objects |
| |
| |
| def main(): |
| """Test if image and motion sensor events are in the same time domain. |
| """ |
| |
| with its.device.ItsSession() as cam: |
| props = cam.get_camera_properties() |
| |
| # Only run test if the appropriate caps are claimed. |
| its.caps.skip_unless(its.caps.sensor_fusion(props) and |
| its.caps.backward_compatible(props)) |
| |
| # Get the timestamp of a captured image. |
| if its.caps.manual_sensor(props): |
| req, fmt = its.objects.get_fastest_manual_capture_settings(props) |
| else: |
| req, fmt = its.objects.get_fastest_auto_capture_settings(props) |
| cap = cam.do_capture(req, fmt) |
| ts_image0 = cap['metadata']['android.sensor.timestamp'] |
| |
| # Get the timestamps of motion events. |
| print 'Reading sensor measurements' |
| sensors = cam.get_sensors() |
| cam.start_sensor_events() |
| time.sleep(2.0) |
| events = cam.get_sensor_events() |
| ts_sensor_first = {} |
| ts_sensor_last = {} |
| for sensor, existing in sensors.iteritems(): |
| if existing: |
| assert events[sensor], '%s sensor has no events!' % sensor |
| ts_sensor_first[sensor] = events[sensor][0]['time'] |
| ts_sensor_last[sensor] = events[sensor][-1]['time'] |
| |
| # Get the timestamp of another image. |
| cap = cam.do_capture(req, fmt) |
| ts_image1 = cap['metadata']['android.sensor.timestamp'] |
| |
| print 'Image timestamps:', ts_image0, ts_image1 |
| |
| # The motion timestamps must be between the two image timestamps. |
| for sensor, existing in sensors.iteritems(): |
| if existing: |
| print '%s timestamps: %d %d' % (sensor, ts_sensor_first[sensor], |
| ts_sensor_last[sensor]) |
| assert ts_image0 < ts_sensor_first[sensor] < ts_image1 |
| assert ts_image0 < ts_sensor_last[sensor] < ts_image1 |
| |
| if __name__ == '__main__': |
| main() |
| |