StillCaptureFlow.java
/*
* Copyright 2020 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.
*/
package androidx.camera.camera2.internal.compat.workaround;
import android.hardware.camera2.CaptureRequest;
import androidx.annotation.NonNull;
import androidx.annotation.RequiresApi;
import androidx.camera.camera2.internal.compat.quirk.DeviceQuirks;
import androidx.camera.camera2.internal.compat.quirk.StillCaptureFlashStopRepeatingQuirk;
import java.util.List;
/**
* Workaround to fix device issues such as calling stopRepeating ahead of still
* capture on some devices when flash is on or auto. See b/172036589.
*/
@RequiresApi(21) // TODO(b/200306659): Remove and replace with annotation on package-info.java
public class StillCaptureFlow {
private final boolean mShouldStopRepeatingBeforeStillCapture;
public StillCaptureFlow() {
final StillCaptureFlashStopRepeatingQuirk quirk = DeviceQuirks.get(
StillCaptureFlashStopRepeatingQuirk.class);
mShouldStopRepeatingBeforeStillCapture = (quirk != null);
}
/**
* Returns whether or not it should call stopRepeating ahead of capture request.
*
* @param captureRequests captureRequests to be executed
* @param isStillCapture true if captureRequests contain a still capture request.
* @return
*/
public boolean shouldStopRepeatingBeforeCapture(
@NonNull List<CaptureRequest> captureRequests, boolean isStillCapture) {
if (!mShouldStopRepeatingBeforeStillCapture || !isStillCapture) {
return false;
}
for (CaptureRequest request : captureRequests) {
int aeMode = request.get(CaptureRequest.CONTROL_AE_MODE);
if (aeMode == CaptureRequest.CONTROL_AE_MODE_ON_AUTO_FLASH
|| aeMode == CaptureRequest.CONTROL_AE_MODE_ON_ALWAYS_FLASH) {
return true;
}
}
return false;
}
}