| # Copyright 2017 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.caps |
| import its.device |
| import its.target |
| |
| import numpy as np |
| |
| GGAIN_TOL = 0.1 |
| FD_TOL = 0.1 |
| ISO_EXP_TOL = 0.1 |
| NUM_TEST_ITERATIONS = 3 |
| |
| |
| def main(): |
| """Basic test for 3A consistency. |
| |
| To pass, 3A must converge for exp, gain, awb, fd within TOL. |
| """ |
| |
| with its.device.ItsSession() as cam: |
| props = cam.get_camera_properties() |
| its.caps.skip_unless(its.caps.read_3a(props)) |
| mono_camera = its.caps.mono_camera(props) |
| |
| iso_exps = [] |
| g_gains = [] |
| fds = [] |
| for _ in range(NUM_TEST_ITERATIONS): |
| try: |
| s, e, gains, xform, fd = cam.do_3a(get_results=True, |
| mono_camera=mono_camera) |
| print ' iso: %d, exposure: %d, iso*exp: %d' % (s, e, e*s) |
| print ' awb_gains', gains, 'awb_transform', xform |
| print ' fd', fd |
| print '' |
| iso_exps.append(e*s) |
| g_gains.append(gains[2]) |
| fds.append(fd) |
| except its.error.Error: |
| print ' FAIL\n' |
| assert len(iso_exps) == NUM_TEST_ITERATIONS |
| assert np.isclose(np.amax(iso_exps), np.amin(iso_exps), ISO_EXP_TOL) |
| assert np.isclose(np.amax(g_gains), np.amin(g_gains), GGAIN_TOL) |
| assert np.isclose(np.amax(fds), np.amin(fds), FD_TOL) |
| for g in gains: |
| assert not np.isnan(g) |
| for x in xform: |
| assert not np.isnan(x) |
| |
| if __name__ == '__main__': |
| main() |
| |