CameraITS: Added AE precapture trigger test

Change-Id: Ie9d97bafff6a208baf4595f556f4b2dd2eb8ebc0
(cherry picked from commit f892b461024ba6f86637cb9388de7d237ca17a82)

1 files changed, 67 insertions, 0 deletions

diff --git a/apps/CameraITS/tests/scene1/test_ae_precapture_trigger.py b/apps/CameraITS/tests/scene1/test_ae_precapture_trigger.py
new file mode 100644
index 0000000..580012e
--- /dev/null
+++ b/apps/CameraITS/tests/scene1/test_ae_precapture_trigger.py
@@ -0,0 +1,67 @@
+# Copyright 2014 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.device
+import its.objects
+import its.target
+
+def main():
+    """Test the AE state machine when using the precapture trigger.
+    """
+
+    INACTIVE = 0
+    SEARCHING = 1
+    CONVERGED = 2
+    LOCKED = 3
+    FLASHREQUIRED = 4
+    PRECAPTURE = 5
+
+    with its.device.ItsSession() as cam:
+        # Capture 5 manual requests, with AE disabled, and the last request
+        # has an AE precapture trigger (which should be ignored since AE is
+        # disabled).
+        manual_reqs = []
+        e, s = its.target.get_target_exposure_combos(cam)["midExposureTime"]
+        manual_req = its.objects.manual_capture_request(s,e)
+        manual_req['android.control.aeMode'] = 0 # Off
+        manual_reqs += [manual_req]*4
+        precap_req = its.objects.manual_capture_request(s,e)
+        precap_req['android.control.aeMode'] = 0 # Off
+        precap_req['android.control.aePrecaptureTrigger'] = 1 # Start
+        manual_reqs.append(precap_req)
+        caps = cam.do_capture(manual_reqs)
+        for cap in caps:
+            assert(cap['metadata']['android.control.aeState'] == INACTIVE)
+
+        # Capture an auto request and verify the AE state; no trigger.
+        auto_req = its.objects.auto_capture_request()
+        auto_req['android.control.aeMode'] = 1  # On
+        cap = cam.do_capture(auto_req)
+        state = cap['metadata']['android.control.aeState']
+        assert(state in [SEARCHING, CONVERGED])
+
+        # Capture with auto request with a precapture trigger.
+        auto_req['android.control.aePrecaptureTrigger'] = 1  # Start
+        cap = cam.do_capture(auto_req)
+        state = cap['metadata']['android.control.aeState']
+        assert(state in [SEARCHING, CONVERGED, PRECAPTURE])
+
+        # Capture some more auto requests, and AE should converge.
+        auto_req['android.control.aePrecaptureTrigger'] = 0
+        caps = cam.do_capture([auto_req]*5)
+        state = caps[-1]['metadata']['android.control.aeState']
+        assert(state == CONVERGED)
+
+if __name__ == '__main__':
+    main()