| /* |
| * Copyright (C) 2021 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 android.hardware.camera2; |
| |
| import android.annotation.IntDef; |
| import android.annotation.NonNull; |
| |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| |
| /** |
| * <p>The CameraInjectionSession class is what determines when injection is active.</p> |
| * |
| * <p>Your application must declare the |
| * {@link android.Manifest.permission#CAMERA_INJECT_EXTERNAL_CAMERA CAMERA} permission in its |
| * manifest in order to use camera injection function.</p> |
| * |
| * @hide |
| * @see CameraManager#injectCamera |
| * @see android.Manifest.permission#CAMERA_INJECT_EXTERNAL_CAMERA |
| */ |
| public abstract class CameraInjectionSession implements AutoCloseable { |
| |
| /** |
| * Close the external camera and switch back to the internal camera. |
| * |
| * <p>Call the method when app streaming stops or the app exits, it switch back to the internal |
| * camera.</p> |
| */ |
| @Override |
| public abstract void close(); |
| |
| /** |
| * A callback for external camera has a success or an error during injecting. |
| * |
| * <p>A callback instance must be provided to the {@link CameraManager#injectCamera} method to |
| * inject camera.</p> |
| * |
| * @hide |
| * @see CameraManager#injectCamera |
| */ |
| public abstract static class InjectionStatusCallback { |
| |
| /** |
| * An error code that can be reported by {@link #onInjectionError} indicating that the |
| * camera injection session has encountered a fatal error. |
| * |
| * @see #onInjectionError |
| */ |
| public static final int ERROR_INJECTION_SESSION = 0; |
| |
| /** |
| * An error code that can be reported by {@link #onInjectionError} indicating that the |
| * camera service has encountered a fatal error. |
| * |
| * <p>The Android device may need to be shut down and restarted to restore |
| * camera function, or there may be a persistent hardware problem.</p> |
| * |
| * <p>An attempt at recovery <i>may</i> be possible by closing the |
| * CameraDevice and the CameraManager, and trying to acquire all resources again from |
| * scratch.</p> |
| * |
| * @see #onInjectionError |
| */ |
| public static final int ERROR_INJECTION_SERVICE = 1; |
| |
| /** |
| * An error code that can be reported by {@link #onInjectionError} indicating that the |
| * injection camera does not support certain camera functions. When this error occurs, the |
| * default processing is still in the inject state, and the app is notified to display an |
| * error message and a black screen. |
| * |
| * @see #onInjectionError |
| */ |
| public static final int ERROR_INJECTION_UNSUPPORTED = 2; |
| |
| /** |
| * @hide |
| */ |
| @Retention(RetentionPolicy.SOURCE) |
| @IntDef(prefix = {"ERROR_"}, value = |
| {ERROR_INJECTION_SESSION, |
| ERROR_INJECTION_SERVICE, |
| ERROR_INJECTION_UNSUPPORTED}) |
| public @interface ErrorCode {}; |
| |
| /** |
| * The method will be called when an external camera has been injected and replaced |
| * internal camera's feed. |
| * |
| * @param injectionSession The camera injection session that has been injected. |
| */ |
| public abstract void onInjectionSucceeded( |
| @NonNull CameraInjectionSession injectionSession); |
| |
| /** |
| * The method will be called when an error occurs in the injected external camera. |
| * |
| * @param errorCode The error code. |
| * @see #ERROR_INJECTION_SESSION |
| * @see #ERROR_INJECTION_SERVICE |
| * @see #ERROR_INJECTION_UNSUPPORTED |
| */ |
| public abstract void onInjectionError(@NonNull int errorCode); |
| } |
| |
| /** |
| * To be inherited by android.hardware.camera2.* code only. |
| * |
| * @hide |
| */ |
| public CameraInjectionSession() { |
| } |
| } |