1 # Copyright 2013 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 15 import os.path 16 import its.caps 17 import its.device 18 import its.image 19 import its.objects 20 import its.target 21 22 NAME = os.path.basename(__file__).split('.')[0] 23 GRADIENT_DELTA = 0.1 24 Y_RELATIVE_DELTA_FLASH = 0.1 # 10% 25 Y_RELATIVE_DELTA_TORCH = 0.05 # 5% 26 27 28 def main(): 29 """Test that the android.flash.mode parameter is applied.""" 30 31 with its.device.ItsSession() as cam: 32 props = cam.get_camera_properties() 33 its.caps.skip_unless(its.caps.compute_target_exposure(props) and 34 its.caps.flash(props)) 35 sync_latency = its.caps.sync_latency(props) 36 37 flash_modes_reported = [] 38 flash_states_reported = [] 39 means = [] 40 grads = [] 41 42 # Manually set the exposure to be a little on the dark side, so that 43 # it should be obvious whether the flash fired or not, and use a 44 # linear tonemap. 45 debug = its.caps.debug_mode() 46 largest_yuv = its.objects.get_largest_yuv_format(props) 47 if debug: 48 fmt = largest_yuv 49 else: 50 match_ar = (largest_yuv['width'], largest_yuv['height']) 51 fmt = its.objects.get_smallest_yuv_format(props, match_ar=match_ar) 52 53 e, s = its.target.get_target_exposure_combos(cam)['midExposureTime'] 54 e /= 2 55 req = its.objects.manual_capture_request(s, e, 0.0, True, props) 56 57 for f in [0, 1, 2]: 58 req['android.flash.mode'] = f 59 cap = its.device.do_capture_with_latency( 60 cam, req, sync_latency, fmt) 61 flash_modes_reported.append(cap['metadata']['android.flash.mode']) 62 flash_states_reported.append(cap['metadata']['android.flash.state']) 63 y, _, _ = its.image.convert_capture_to_planes(cap, props) 64 its.image.write_image(y, '%s_%d.jpg' % (NAME, f)) 65 tile = its.image.get_image_patch(y, 0.375, 0.375, 0.25, 0.25) 66 its.image.write_image(tile, '%s_%d_tile.jpg' % (NAME, f)) 67 means.append(its.image.compute_image_means(tile)[0]) 68 grads.append(its.image.compute_image_max_gradients(tile)[0]) 69 70 assert flash_modes_reported == [0, 1, 2] 71 assert flash_states_reported[0] not in [3, 4] 72 assert flash_states_reported[1] in [3, 4] 73 assert flash_states_reported[2] in [3, 4] 74 75 print 'Brightnesses:', means 76 print 'Max gradients: ', grads 77 assert (grads[1]-grads[0] > GRADIENT_DELTA or 78 (means[1]-means[0]) / means[0] > Y_RELATIVE_DELTA_FLASH) 79 assert (grads[2]-grads[0] > GRADIENT_DELTA or 80 (means[2]-means[0]) / means[0] > Y_RELATIVE_DELTA_TORCH) 81 82 if __name__ == '__main__': 83 main() 84 85
