| # Copyright 2018 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 os.path |
| |
| import its.caps |
| import its.device |
| import its.image |
| import its.objects |
| |
| NAME = os.path.basename(__file__).split('.')[0] |
| RTOL_EXP_GAIN = 0.97 |
| TEST_EXP_RANGE = [6E6, 1E9] # ns [6ms, 1s] |
| |
| |
| def main(): |
| """Test that the device will write/read correct exp/gain values.""" |
| |
| with its.device.ItsSession() as cam: |
| props = cam.get_camera_properties() |
| its.caps.skip_unless(its.caps.manual_sensor(props) and |
| its.caps.per_frame_control(props)) |
| |
| # determine capture format |
| debug = its.caps.debug_mode() |
| largest_yuv = its.objects.get_largest_yuv_format(props) |
| if debug: |
| fmt = largest_yuv |
| else: |
| match_ar = (largest_yuv['width'], largest_yuv['height']) |
| fmt = its.objects.get_smallest_yuv_format(props, match_ar=match_ar) |
| |
| # grab exp/gain ranges from camera |
| sensor_exp_range = props['android.sensor.info.exposureTimeRange'] |
| sens_range = props['android.sensor.info.sensitivityRange'] |
| print 'sensor e range:', sensor_exp_range |
| print 'sensor s range:', sens_range |
| |
| # determine if exposure test range is within sensor reported range |
| exp_range = [] |
| if sensor_exp_range[0] < TEST_EXP_RANGE[0]: |
| exp_range.append(TEST_EXP_RANGE[0]) |
| else: |
| exp_range.append(sensor_exp_range[0]) |
| if sensor_exp_range[1] > TEST_EXP_RANGE[1]: |
| exp_range.append(TEST_EXP_RANGE[1]) |
| else: |
| exp_range.append(sensor_exp_range[1]) |
| |
| # build requests |
| reqs = [] |
| index_list = [] |
| for exp in exp_range: |
| for sens in sens_range: |
| reqs.append(its.objects.manual_capture_request(sens, exp)) |
| index_list.append((exp, sens)) |
| |
| # take shots |
| caps = cam.do_capture(reqs, fmt) |
| |
| # extract exp/sensitivity data |
| data = {} |
| for i, cap in enumerate(caps): |
| e_read = cap['metadata']['android.sensor.exposureTime'] |
| s_read = cap['metadata']['android.sensor.sensitivity'] |
| data[index_list[i]] = (e_read, s_read) |
| |
| # check read/write match across all shots |
| e_failed = [] |
| s_failed = [] |
| for e_write in exp_range: |
| for s_write in sens_range: |
| (e_read, s_read) = data[(e_write, s_write)] |
| if e_write < e_read or e_read/float(e_write) <= RTOL_EXP_GAIN: |
| e_failed.append({'e_write': e_write, |
| 'e_read': e_read, |
| 's_write': s_write, |
| 's_read': s_read}) |
| if s_write < s_read or s_read/float(s_write) <= RTOL_EXP_GAIN: |
| s_failed.append({'e_write': e_write, |
| 'e_read': e_read, |
| 's_write': s_write, |
| 's_read': s_read}) |
| |
| # print results |
| if e_failed: |
| print '\nFAILs for exposure time' |
| for fail in e_failed: |
| print ' e_write: %d, e_read: %d, RTOL: %.2f, ' % ( |
| fail['e_write'], fail['e_read'], RTOL_EXP_GAIN), |
| print 's_write: %d, s_read: %d, RTOL: %.2f' % ( |
| fail['s_write'], fail['s_read'], RTOL_EXP_GAIN) |
| if s_failed: |
| print 'FAILs for sensitivity(ISO)' |
| for fail in s_failed: |
| print 's_write: %d, s_read: %d, RTOL: %.2f, ' % ( |
| fail['s_write'], fail['s_read'], RTOL_EXP_GAIN), |
| print ' e_write: %d, e_read: %d, RTOL: %.2f' % ( |
| fail['e_write'], fail['e_read'], RTOL_EXP_GAIN) |
| |
| # assert PASS/FAIL |
| assert not e_failed+s_failed |
| |
| |
| if __name__ == '__main__': |
| main() |