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-rw-r--r--apps/CameraITS/tests/scene1/test_jpeg.py64
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diff --git a/apps/CameraITS/tests/scene1/test_jpeg.py b/apps/CameraITS/tests/scene1/test_jpeg.py
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--- a/apps/CameraITS/tests/scene1/test_jpeg.py
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-# 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.caps
-import its.device
-import its.objects
-import its.target
-import os.path
-import math
-
-def main():
- """Test that converted YUV images and device JPEG images look the same.
- """
- NAME = os.path.basename(__file__).split(".")[0]
-
- THRESHOLD_MAX_RMS_DIFF = 0.01
-
- with its.device.ItsSession() as cam:
- props = cam.get_camera_properties()
- if not its.caps.compute_target_exposure(props):
- print "Test skipped"
- return
-
- e, s = its.target.get_target_exposure_combos(cam)["midExposureTime"]
- req = its.objects.manual_capture_request(s, e, True)
-
- # YUV
- size = its.objects.get_available_output_sizes("yuv", props)[0]
- out_surface = {"width":size[0], "height":size[1], "format":"yuv"}
- cap = cam.do_capture(req, out_surface)
- img = its.image.convert_capture_to_rgb_image(cap)
- its.image.write_image(img, "%s_fmt=yuv.jpg" % (NAME))
- tile = its.image.get_image_patch(img, 0.45, 0.45, 0.1, 0.1)
- rgb0 = its.image.compute_image_means(tile)
-
- # JPEG
- size = its.objects.get_available_output_sizes("jpg", props)[0]
- out_surface = {"width":size[0], "height":size[1], "format":"jpg"}
- cap = cam.do_capture(req, out_surface)
- img = its.image.decompress_jpeg_to_rgb_image(cap["data"])
- its.image.write_image(img, "%s_fmt=jpg.jpg" % (NAME))
- tile = its.image.get_image_patch(img, 0.45, 0.45, 0.1, 0.1)
- 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()
-