Yin-Chia Yeh | 76dd143 | 2015-04-27 16:42:03 -0700 | [diff] [blame] | 1 | # Copyright 2015 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 its.image |
| 16 | import its.caps |
| 17 | import its.device |
| 18 | import its.objects |
| 19 | import its.target |
| 20 | import os.path |
| 21 | import math |
| 22 | |
| 23 | def main(): |
| 24 | """Test capturing a single frame as both RAW12 and YUV outputs. |
| 25 | """ |
| 26 | NAME = os.path.basename(__file__).split(".")[0] |
| 27 | |
| 28 | THRESHOLD_MAX_RMS_DIFF = 0.035 |
| 29 | |
| 30 | with its.device.ItsSession() as cam: |
| 31 | props = cam.get_camera_properties() |
| 32 | its.caps.skip_unless(its.caps.compute_target_exposure(props) and |
| 33 | its.caps.raw12(props) and |
| 34 | its.caps.per_frame_control(props)) |
| 35 | |
| 36 | # Use a manual request with a linear tonemap so that the YUV and RAW |
| 37 | # should look the same (once converted by the its.image module). |
| 38 | e, s = its.target.get_target_exposure_combos(cam)["midExposureTime"] |
| 39 | req = its.objects.manual_capture_request(s, e, True) |
| 40 | |
| 41 | cap_raw, cap_yuv = cam.do_capture(req, |
| 42 | [{"format":"raw12"}, {"format":"yuv"}]) |
| 43 | |
| 44 | img = its.image.convert_capture_to_rgb_image(cap_yuv) |
| 45 | its.image.write_image(img, "%s_yuv.jpg" % (NAME), True) |
| 46 | tile = its.image.get_image_patch(img, 0.45, 0.45, 0.1, 0.1) |
| 47 | rgb0 = its.image.compute_image_means(tile) |
| 48 | |
| 49 | # Raw shots are 1/2 x 1/2 smaller after conversion to RGB, so scale the |
| 50 | # tile appropriately. |
| 51 | img = its.image.convert_capture_to_rgb_image(cap_raw, props=props) |
| 52 | its.image.write_image(img, "%s_raw.jpg" % (NAME), True) |
| 53 | tile = its.image.get_image_patch(img, 0.475, 0.475, 0.05, 0.05) |
| 54 | rgb1 = its.image.compute_image_means(tile) |
| 55 | |
| 56 | rms_diff = math.sqrt( |
| 57 | sum([pow(rgb0[i] - rgb1[i], 2.0) for i in range(3)]) / 3.0) |
| 58 | print "RMS difference:", rms_diff |
| 59 | assert(rms_diff < THRESHOLD_MAX_RMS_DIFF) |
| 60 | |
| 61 | if __name__ == '__main__': |
| 62 | main() |
| 63 | |