1# Copyright 2017 The Android Open Source Project 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14 15import its.caps 16import its.device 17import its.target 18 19import numpy as np 20 21GGAIN_TOL = 0.1 22FD_TOL = 0.1 23SENS_TOL = 0.1 24EXP_TOL = 0.1 25NUM_TEST_ITERATIONS = 3 26 27 28def main(): 29 """Basic test for 3A consistency. 30 31 To pass, 3A must converge for exp, gain, awb, fd within TOL. 32 """ 33 34 with its.device.ItsSession() as cam: 35 props = cam.get_camera_properties() 36 its.caps.skip_unless(its.caps.read_3a(props)) 37 38 exps = [] 39 senses = [] 40 g_gains = [] 41 fds = [] 42 for _ in range(NUM_TEST_ITERATIONS): 43 try: 44 s, e, g, xform, fd = cam.do_3a(get_results=True) 45 print ' sensitivity', s, 'exposure', e 46 print ' gains', g, 'transform', xform 47 print ' fd', fd 48 print '' 49 exps.append(e) 50 senses.append(s) 51 g_gains.append(g[2]) 52 fds.append(fd) 53 except its.error.Error: 54 print ' FAIL\n' 55 assert len(exps) == NUM_TEST_ITERATIONS 56 assert np.isclose(np.amax(exps), np.amin(exps), EXP_TOL) 57 assert np.isclose(np.amax(senses), np.amin(senses), SENS_TOL) 58 assert np.isclose(np.amax(g_gains), np.amin(g_gains), GGAIN_TOL) 59 assert np.isclose(np.amax(fds), np.amin(fds), FD_TOL) 60 61if __name__ == '__main__': 62 main() 63 64