| # 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. |
| """Verifies android.sensor.sensitivity parameter is applied.""" |
| |
| |
| import logging |
| import os.path |
| import matplotlib |
| from matplotlib import pylab |
| from mobly import test_runner |
| |
| import its_base_test |
| import camera_properties_utils |
| import capture_request_utils |
| import image_processing_utils |
| import its_session_utils |
| import target_exposure_utils |
| |
| COLORS = ['R', 'G', 'B'] |
| NAME = os.path.splitext(os.path.basename(__file__))[0] |
| NUM_STEPS = 5 |
| PATCH_H = 0.1 # center 10% |
| PATCH_W = 0.1 |
| PATCH_X = 0.5 - PATCH_W/2 |
| PATCH_Y = 0.5 - PATCH_H/2 |
| |
| |
| class ParamSensitivityTest(its_base_test.ItsBaseTest): |
| """Test that the android.sensor.sensitivity parameter is applied.""" |
| |
| def test_param_sensitivity(self): |
| logging.debug('Starting %s', NAME) |
| sensitivities = None |
| r_means = [] |
| g_means = [] |
| b_means = [] |
| |
| with its_session_utils.ItsSession( |
| device_id=self.dut.serial, |
| camera_id=self.camera_id, |
| hidden_physical_id=self.hidden_physical_id) as cam: |
| props = cam.get_camera_properties() |
| props = cam.override_with_hidden_physical_camera_props(props) |
| log_path = self.log_path |
| |
| # check SKIP conditions |
| camera_properties_utils.skip_unless( |
| camera_properties_utils.compute_target_exposure(props)) |
| |
| # Load chart for scene |
| its_session_utils.load_scene( |
| cam, props, self.scene, self.tablet, self.chart_distance) |
| |
| # Initialize requests |
| sync_latency = camera_properties_utils.sync_latency(props) |
| largest_yuv = capture_request_utils.get_largest_yuv_format(props) |
| match_ar = (largest_yuv['width'], largest_yuv['height']) |
| fmt = capture_request_utils.get_smallest_yuv_format( |
| props, match_ar=match_ar) |
| |
| expt, _ = target_exposure_utils.get_target_exposure_combos( |
| log_path, cam)['midSensitivity'] |
| sens_range = props['android.sensor.info.sensitivityRange'] |
| sens_step = (sens_range[1] - sens_range[0]) / float(NUM_STEPS-1) |
| sensitivities = [ |
| sens_range[0] + i * sens_step for i in range(NUM_STEPS)] |
| |
| for s in sensitivities: |
| logging.debug('Capturing with sensitivity: %d', s) |
| req = capture_request_utils.manual_capture_request(s, expt) |
| cap = its_session_utils.do_capture_with_latency( |
| cam, req, sync_latency, fmt) |
| img = image_processing_utils.convert_capture_to_rgb_image(cap) |
| image_processing_utils.write_image(img, '%s_iso=%04d.jpg' % ( |
| os.path.join(log_path, NAME), s)) |
| patch = image_processing_utils.get_image_patch( |
| img, PATCH_X, PATCH_Y, PATCH_W, PATCH_H) |
| rgb_means = image_processing_utils.compute_image_means(patch) |
| r_means.append(rgb_means[0]) |
| g_means.append(rgb_means[1]) |
| b_means.append(rgb_means[2]) |
| |
| logging.debug('R means: %s', str(r_means)) |
| logging.debug('G means: %s', str(g_means)) |
| logging.debug('B means: %s', str(b_means)) |
| |
| # Draw plot |
| pylab.figure(NAME) |
| pylab.plot(sensitivities, r_means, '-ro') |
| pylab.plot(sensitivities, g_means, '-go') |
| pylab.plot(sensitivities, b_means, '-bo') |
| pylab.ylim([0, 1]) |
| pylab.title(NAME) |
| pylab.xlabel('Gain (ISO)') |
| pylab.ylabel('RGB means') |
| matplotlib.pyplot.savefig( |
| '%s_plot_means.png' % os.path.join(log_path, NAME)) |
| |
| # Test for pass/fail: check that each shot is brighter than previous |
| for i, means in enumerate([r_means, g_means, b_means]): |
| for j in range(len(means)-1): |
| e_msg = '%s cap %d mean[j+1]: %.3f, means[j]: %3.f' % ( |
| COLORS[i], j, means[j+1], means[j]) |
| assert means[j+1] > means[j], e_msg |
| |
| if __name__ == '__main__': |
| test_runner.main() |
| |