public class

ForceCloseDeferrableSurface

extends java.lang.Object

 java.lang.Object

↳androidx.camera.camera2.internal.compat.workaround.ForceCloseDeferrableSurface

Gradle dependencies

compile group: 'androidx.camera', name: 'camera-camera2', version: '1.5.0-alpha01'

  • groupId: androidx.camera
  • artifactId: camera-camera2
  • version: 1.5.0-alpha01

Artifact androidx.camera:camera-camera2:1.5.0-alpha01 it located at Google repository (https://maven.google.com/)

Overview

The workaround is used to close the DeferrableSurface when the android.hardware.camera2.CameraCaptureSession is closed. The next CameraCaptureSession will throw an exception when attempting to retrieve the underlying Surface. The Camera now posts an error to the UseCase signaling the DeferrableSurface needs to be recreated.

Summary

Constructors
publicForceCloseDeferrableSurface(Quirks cameraQuirks, Quirks deviceQuirks)

Constructor of the ForceCloseDeferrableSurface workaround

Methods
public voidonSessionEnd(java.util.List<DeferrableSurface> deferrableSurfaces)

Close the DeferrableSurface to force the DeferrableSurface to be recreated in the new CameraCaptureSession.

public booleanshouldForceClose()

Return true if any of the TextureViewIsClosedQuirk, PreviewOrientationIncorrectQuirk, ConfigureSurfaceToSecondarySessionFailQuirk is enabled.

from java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructors

public ForceCloseDeferrableSurface(Quirks cameraQuirks, Quirks deviceQuirks)

Constructor of the ForceCloseDeferrableSurface workaround

Methods

public boolean shouldForceClose()

Return true if any of the TextureViewIsClosedQuirk, PreviewOrientationIncorrectQuirk, ConfigureSurfaceToSecondarySessionFailQuirk is enabled.

public void onSessionEnd(java.util.List<DeferrableSurface> deferrableSurfaces)

Close the DeferrableSurface to force the DeferrableSurface to be recreated in the new CameraCaptureSession.

Source

/*
 * Copyright 2022 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 androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.camera.camera2.internal.compat.quirk.ConfigureSurfaceToSecondarySessionFailQuirk;
import androidx.camera.camera2.internal.compat.quirk.PreviewOrientationIncorrectQuirk;
import androidx.camera.camera2.internal.compat.quirk.TextureViewIsClosedQuirk;
import androidx.camera.core.Logger;
import androidx.camera.core.impl.DeferrableSurface;
import androidx.camera.core.impl.Quirks;

import java.util.List;

/**
 * The workaround is used to close the {@link androidx.camera.core.impl.DeferrableSurface} when the
 * {@link android.hardware.camera2.CameraCaptureSession} is closed. The next CameraCaptureSession
 * will throw an exception when attempting to retrieve the underlying Surface.
 * The Camera now posts an error to the UseCase signaling the DeferrableSurface needs to be
 * recreated.
 *
 * @see TextureViewIsClosedQuirk
 * @see PreviewOrientationIncorrectQuirk
 * @see ConfigureSurfaceToSecondarySessionFailQuirk
 */
public class ForceCloseDeferrableSurface {
    private final boolean mHasTextureViewIsClosedQuirk;
    private final boolean mHasPreviewOrientationIncorrectQuirk;
    private final boolean mHasConfigureSurfaceToSecondarySessionFailQuirk;

    /** Constructor of the ForceCloseDeferrableSurface workaround */
    public ForceCloseDeferrableSurface(@NonNull Quirks cameraQuirks,
            @NonNull Quirks deviceQuirks) {
        mHasTextureViewIsClosedQuirk = deviceQuirks.contains(TextureViewIsClosedQuirk.class);
        mHasPreviewOrientationIncorrectQuirk = cameraQuirks.contains(
                PreviewOrientationIncorrectQuirk.class);
        mHasConfigureSurfaceToSecondarySessionFailQuirk =
                cameraQuirks.contains(ConfigureSurfaceToSecondarySessionFailQuirk.class);
    }

    /**
     * Return true if any of the TextureViewIsClosedQuirk, PreviewOrientationIncorrectQuirk,
     * ConfigureSurfaceToSecondarySessionFailQuirk is enabled.
     */
    public boolean shouldForceClose() {
        return mHasTextureViewIsClosedQuirk || mHasPreviewOrientationIncorrectQuirk
                || mHasConfigureSurfaceToSecondarySessionFailQuirk;
    }

    /**
     * Close the {@link DeferrableSurface} to force the {@link DeferrableSurface} to be recreated
     * in the new CameraCaptureSession.
     */
    public void onSessionEnd(@Nullable List<DeferrableSurface> deferrableSurfaces) {
        if (shouldForceClose() && deferrableSurfaces != null) {
            for (DeferrableSurface deferrableSurface : deferrableSurfaces) {
                deferrableSurface.close();
            }
            Logger.d("ForceCloseDeferrableSurface", "deferrableSurface closed");
        }
    }
}