| /* |
| * Copyright 2019 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.impl; |
| |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.RestrictTo; |
| import androidx.camera.core.CaptureConfig; |
| import androidx.camera.core.MultiValueSet; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| /** |
| * Different implementations of {@link CameraEventCallback}. |
| * |
| * @hide |
| */ |
| @RestrictTo(RestrictTo.Scope.LIBRARY_GROUP) |
| public final class CameraEventCallbacks extends MultiValueSet<CameraEventCallback> { |
| |
| public CameraEventCallbacks(CameraEventCallback ... callbacks) { |
| addAll(Arrays.asList(callbacks)); |
| } |
| |
| /** Returns a camera event callback which calls a list of other callbacks. */ |
| @NonNull |
| public ComboCameraEventCallback createComboCallback() { |
| return new ComboCameraEventCallback(getAllItems()); |
| } |
| |
| /** Returns a camera event callback which does nothing. */ |
| @NonNull |
| public static CameraEventCallbacks createEmptyCallback() { |
| return new CameraEventCallbacks(); |
| } |
| |
| @NonNull |
| @Override |
| public MultiValueSet<CameraEventCallback> clone() { |
| CameraEventCallbacks ret = createEmptyCallback(); |
| ret.addAll(getAllItems()); |
| return ret; |
| } |
| |
| /** |
| * A CameraEventCallback which contains a list of CameraEventCallback and will |
| * propagate received callback to the list. |
| */ |
| public static final class ComboCameraEventCallback { |
| private final List<CameraEventCallback> mCallbacks = new ArrayList<>(); |
| |
| ComboCameraEventCallback(List<CameraEventCallback> callbacks) { |
| for (CameraEventCallback callback : callbacks) { |
| mCallbacks.add(callback); |
| } |
| } |
| |
| /** |
| * To Invoke {@link CameraEventCallback#onPresetSession()} on the set of list and |
| * aggregated the results to a set list. |
| * |
| * @return List<CaptureConfig> The request information to customize the session. |
| */ |
| public List<CaptureConfig> onPresetSession() { |
| // TODO(b/141959507): Suppressed during upgrade to AGP 3.6. |
| @SuppressWarnings("JdkObsolete") |
| List<CaptureConfig> ret = new LinkedList<>(); |
| for (CameraEventCallback callback : mCallbacks) { |
| CaptureConfig presetCaptureStage = callback.onPresetSession(); |
| if (presetCaptureStage != null) { |
| ret.add(presetCaptureStage); |
| } |
| } |
| return ret; |
| } |
| |
| /** |
| * To Invoke {@link CameraEventCallback#onEnableSession()} on the set of list and |
| * aggregated the results to a set list. |
| * |
| * @return List<CaptureConfig> The request information to customize the session. |
| */ |
| @SuppressWarnings("JdkObsolete") // TODO(b/141959507): Suppressed during upgrade to AGP 3.6. |
| public List<CaptureConfig> onEnableSession() { |
| List<CaptureConfig> ret = new LinkedList<>(); |
| for (CameraEventCallback callback : mCallbacks) { |
| CaptureConfig enableCaptureStage = callback.onEnableSession(); |
| if (enableCaptureStage != null) { |
| ret.add(enableCaptureStage); |
| } |
| } |
| return ret; |
| } |
| |
| /** |
| * To Invoke {@link CameraEventCallback#onRepeating()} on the set of list and |
| * aggregated the results to a set list. |
| * |
| * @return List<CaptureConfig> The request information to customize the session. |
| */ |
| @SuppressWarnings("JdkObsolete") // TODO(b/141959507): Suppressed during upgrade to AGP 3.6. |
| public List<CaptureConfig> onRepeating() { |
| List<CaptureConfig> ret = new LinkedList<>(); |
| for (CameraEventCallback callback : mCallbacks) { |
| CaptureConfig repeatingCaptureStage = callback.onRepeating(); |
| if (repeatingCaptureStage != null) { |
| ret.add(repeatingCaptureStage); |
| } |
| } |
| return ret; |
| } |
| |
| /** |
| * To Invoke {@link CameraEventCallback#onDisableSession()} on the set of list and |
| * aggregated the results to a set list. |
| * |
| * @return List<CaptureConfig> The request information to customize the session. |
| */ |
| @SuppressWarnings("JdkObsolete") // TODO(b/141959507): Suppressed during upgrade to AGP 3.6. |
| public List<CaptureConfig> onDisableSession() { |
| List<CaptureConfig> ret = new LinkedList<>(); |
| for (CameraEventCallback callback : mCallbacks) { |
| CaptureConfig disableCaptureStage = callback.onDisableSession(); |
| if (disableCaptureStage != null) { |
| ret.add(disableCaptureStage); |
| } |
| } |
| return ret; |
| } |
| |
| @NonNull |
| public List<CameraEventCallback> getCallbacks() { |
| return mCallbacks; |
| } |
| } |
| } |