| # Copyright 2013 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 pylab |
| import os.path |
| import matplotlib |
| import matplotlib.pyplot |
| |
| def main(): |
| """Test that the android.flash.mode parameter is applied. |
| """ |
| NAME = os.path.basename(__file__).split(".")[0] |
| |
| MIN_BRIGHTNESS_DELTA = 0.1 |
| |
| with its.device.ItsSession() as cam: |
| |
| flash_modes_reported = [] |
| flash_states_reported = [] |
| g_means = [] |
| |
| # Manually set the exposure to be a little on the dark side, so that |
| # it should be obvious whether the flash fired or not, and use a |
| # linear tonemap. |
| e, s = its.target.get_target_exposure_combos(cam)["midExposureTime"] |
| e /= 4 |
| req = its.objects.manual_capture_request(s, e, True) |
| |
| for f in [0,1,2]: |
| req["android.flash.mode"] = f |
| cap = cam.do_capture(req) |
| flash_modes_reported.append(cap["metadata"]["android.flash.mode"]) |
| flash_states_reported.append(cap["metadata"]["android.flash.state"]) |
| img = its.image.convert_capture_to_rgb_image(cap) |
| its.image.write_image(img, "%s_mode=%d.jpg" % (NAME, f)) |
| tile = its.image.get_image_patch(img, 0.45, 0.45, 0.1, 0.1) |
| rgb = its.image.compute_image_means(tile) |
| g_means.append(rgb[1]) |
| |
| assert(flash_modes_reported == [0,1,2]) |
| assert(flash_states_reported[0] not in [3,4]) |
| assert(flash_states_reported[1] in [3,4]) |
| assert(flash_states_reported[2] in [3,4]) |
| |
| print "G brightnesses:", g_means |
| assert(g_means[1] > g_means[0] + MIN_BRIGHTNESS_DELTA) |
| assert(g_means[2] > g_means[0] + MIN_BRIGHTNESS_DELTA) |
| |
| if __name__ == '__main__': |
| main() |
| |