| # Copyright 2015 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.caps |
| import its.device |
| import its.objects |
| import its.target |
| import os.path |
| import math |
| |
| def main(): |
| """Test capturing a single frame as both RAW12 and YUV outputs. |
| """ |
| NAME = os.path.basename(__file__).split(".")[0] |
| |
| THRESHOLD_MAX_RMS_DIFF = 0.035 |
| |
| with its.device.ItsSession() as cam: |
| props = cam.get_camera_properties() |
| its.caps.skip_unless(its.caps.compute_target_exposure(props) and |
| its.caps.raw12(props) and |
| its.caps.per_frame_control(props)) |
| |
| # Use a manual request with a linear tonemap so that the YUV and RAW |
| # should look the same (once converted by the its.image module). |
| e, s = its.target.get_target_exposure_combos(cam)["midExposureTime"] |
| req = its.objects.manual_capture_request(s, e, True, props) |
| |
| max_raw12_size = \ |
| its.objects.get_available_output_sizes("raw12", props)[0] |
| w,h = its.objects.get_available_output_sizes( |
| "yuv", props, (1920, 1080), max_raw12_size)[0] |
| cap_raw, cap_yuv = cam.do_capture(req, |
| [{"format":"raw12"}, |
| {"format":"yuv", "width":w, "height":h}]) |
| |
| img = its.image.convert_capture_to_rgb_image(cap_yuv) |
| its.image.write_image(img, "%s_yuv.jpg" % (NAME), True) |
| tile = its.image.get_image_patch(img, 0.45, 0.45, 0.1, 0.1) |
| rgb0 = its.image.compute_image_means(tile) |
| |
| # Raw shots are 1/2 x 1/2 smaller after conversion to RGB, so scale the |
| # tile appropriately. |
| img = its.image.convert_capture_to_rgb_image(cap_raw, props=props) |
| its.image.write_image(img, "%s_raw.jpg" % (NAME), True) |
| tile = its.image.get_image_patch(img, 0.475, 0.475, 0.05, 0.05) |
| rgb1 = its.image.compute_image_means(tile) |
| |
| rms_diff = math.sqrt( |
| sum([pow(rgb0[i] - rgb1[i], 2.0) for i in range(3)]) / 3.0) |
| print "RMS difference:", rms_diff |
| assert(rms_diff < THRESHOLD_MAX_RMS_DIFF) |
| |
| if __name__ == '__main__': |
| main() |
| |