| /* |
| * 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.testing; |
| |
| import android.os.AsyncTask; |
| import android.os.Looper; |
| import android.view.Surface; |
| |
| import androidx.annotation.NonNull; |
| import androidx.camera.core.impl.DeferrableSurface; |
| import androidx.camera.core.impl.DeferrableSurfaces; |
| import androidx.camera.core.impl.utils.executor.CameraXExecutors; |
| import androidx.core.os.HandlerCompat; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ScheduledExecutorService; |
| |
| /** Utility functions for DeferrableSurfaces. */ |
| public class DeferrableSurfacesUtil { |
| private DeferrableSurfacesUtil() { |
| } |
| |
| /** |
| * Returns a {@link Surface} list from a DeferrableSurface collection. |
| * |
| * <p>Any DeferrableSurface that can not be obtained will be missing from the list. This |
| * means that the returned list will only be guaranteed to be less than or equal to in size to |
| * the original collection. |
| */ |
| @NonNull |
| public static List<Surface> surfaceList( |
| @NonNull Collection<DeferrableSurface> deferrableSurfaces) { |
| return surfaceList(deferrableSurfaces, true); |
| } |
| |
| /** |
| * Returns a {@link Surface} list from a DeferrableSurface collection. |
| * |
| * @param removeNullSurfaces If true remove all Surfaces that were not retrieved. |
| */ |
| @NonNull |
| public static List<Surface> surfaceList( |
| @NonNull Collection<DeferrableSurface> deferrableSurfaces, boolean removeNullSurfaces) { |
| ScheduledExecutorService scheduledExecutorService = |
| CameraXExecutors.newHandlerExecutor( |
| HandlerCompat.createAsync(Looper.getMainLooper())); |
| try { |
| return DeferrableSurfaces.surfaceListWithTimeout(deferrableSurfaces, removeNullSurfaces, |
| Long.MAX_VALUE, AsyncTask.THREAD_POOL_EXECUTOR, |
| scheduledExecutorService).get(); |
| } catch (InterruptedException | ExecutionException e) { |
| return Collections.unmodifiableList(Collections.emptyList()); |
| } |
| } |
| } |