1# Copyright 2014 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 15import math 16 17import its.caps 18import its.device 19import its.objects 20import its.target 21 22 23def main(): 24 """Test the validity of some metadata entries. 25 26 Looks at capture results and at the camera characteristics objects. 27 """ 28 global md, props, failed 29 30 with its.device.ItsSession() as cam: 31 # Arbitrary capture request exposure values; image content is not 32 # important for this test, only the metadata. 33 props = cam.get_camera_properties() 34 auto_req = its.objects.auto_capture_request() 35 cap = cam.do_capture(auto_req) 36 md = cap["metadata"] 37 38 print "Hardware level" 39 print " Legacy:", its.caps.legacy(props) 40 print " Limited:", its.caps.limited(props) 41 print " Full or better:", its.caps.full_or_better(props) 42 print "Capabilities" 43 print " Manual sensor:", its.caps.manual_sensor(props) 44 print " Manual post-proc:", its.caps.manual_post_proc(props) 45 print " Raw:", its.caps.raw(props) 46 print " Sensor fusion:", its.caps.sensor_fusion(props) 47 48 # Test: hardware level should be a valid value. 49 check('props.has_key("android.info.supportedHardwareLevel")') 50 check('props["android.info.supportedHardwareLevel"] is not None') 51 check('props["android.info.supportedHardwareLevel"] in [0,1,2,3]') 52 full = getval('props["android.info.supportedHardwareLevel"]') == 1 53 manual_sensor = its.caps.manual_sensor(props) 54 55 # Test: rollingShutterSkew, and frameDuration tags must all be present, 56 # and rollingShutterSkew must be greater than zero and smaller than all 57 # of the possible frame durations. 58 if manual_sensor: 59 check('md.has_key("android.sensor.frameDuration")') 60 check('md["android.sensor.frameDuration"] is not None') 61 check('md.has_key("android.sensor.rollingShutterSkew")') 62 check('md["android.sensor.rollingShutterSkew"] is not None') 63 if manual_sensor: 64 check('md["android.sensor.frameDuration"] > ' 65 'md["android.sensor.rollingShutterSkew"] > 0') 66 67 # Test: timestampSource must be a valid value. 68 check('props.has_key("android.sensor.info.timestampSource")') 69 check('props["android.sensor.info.timestampSource"] is not None') 70 check('props["android.sensor.info.timestampSource"] in [0,1]') 71 72 # Test: croppingType must be a valid value, and for full devices, it 73 # must be FREEFORM=1. 74 check('props.has_key("android.scaler.croppingType")') 75 check('props["android.scaler.croppingType"] is not None') 76 check('props["android.scaler.croppingType"] in [0,1]') 77 78 assert(not failed) 79 80 if not its.caps.legacy(props): 81 # Test: pixel_pitch, FOV, and hyperfocal distance are reasonable 82 fmts = props["android.scaler.streamConfigurationMap"]["availableStreamConfigurations"] 83 fmts = sorted(fmts, key=lambda k: k["width"]*k["height"], reverse=True) 84 sensor_size = props["android.sensor.info.physicalSize"] 85 pixel_pitch_h = (sensor_size["height"] / fmts[0]["height"] * 1E3) 86 pixel_pitch_w = (sensor_size["width"] / fmts[0]["width"] * 1E3) 87 print "Assert pixel_pitch WxH: %.2f um, %.2f um" % (pixel_pitch_w, 88 pixel_pitch_h) 89 assert 1.0 <= pixel_pitch_w <= 10 90 assert 1.0 <= pixel_pitch_h <= 10 91 assert 0.333 <= pixel_pitch_w/pixel_pitch_h <= 3.0 92 93 diag = math.sqrt(sensor_size["height"] ** 2 + 94 sensor_size["width"] ** 2) 95 fl = md["android.lens.focalLength"] 96 fov = 2 * math.degrees(math.atan(diag / (2 * fl))) 97 print "Assert field of view: %.1f degrees" % fov 98 assert 30 <= fov <= 130 99 100 hyperfocal = 1.0 / props["android.lens.info.hyperfocalDistance"] 101 print "Assert hyperfocal distance: %.2f m" % hyperfocal 102 assert 0.02 <= hyperfocal 103 104 105def getval(expr, default=None): 106 try: 107 return eval(expr) 108 except: 109 return default 110 111failed = False 112 113 114def check(expr): 115 global md, props, failed 116 try: 117 if eval(expr): 118 print "Passed>", expr 119 else: 120 print "Failed>>", expr 121 failed = True 122 except: 123 print "Failed>>", expr 124 failed = True 125 126if __name__ == '__main__': 127 main() 128 129