129 lines
4.4 KiB
Java
129 lines
4.4 KiB
Java
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.hardware.camera2;
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import android.annotation.IntDef;
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import android.annotation.NonNull;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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/**
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* <p>The CameraInjectionSession class is what determines when injection is active.</p>
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*
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* <p>Your application must declare the
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* {@link android.Manifest.permission#CAMERA_INJECT_EXTERNAL_CAMERA CAMERA} permission in its
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* manifest in order to use camera injection function.</p>
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*
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* @hide
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* @see CameraManager#injectCamera
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* @see android.Manifest.permission#CAMERA_INJECT_EXTERNAL_CAMERA
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*/
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public abstract class CameraInjectionSession implements AutoCloseable {
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/**
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* Close the external camera and switch back to the internal camera.
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*
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* <p>Call the method when app streaming stops or the app exits, it switch back to the internal
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* camera.</p>
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*/
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@Override
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public abstract void close();
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/**
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* A callback for external camera has a success or an error during injecting.
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*
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* <p>A callback instance must be provided to the {@link CameraManager#injectCamera} method to
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* inject camera.</p>
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*
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* @hide
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* @see CameraManager#injectCamera
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*/
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public abstract static class InjectionStatusCallback {
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/**
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* An error code that can be reported by {@link #onInjectionError} indicating that the
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* camera injection session has encountered a fatal error.
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*
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* @see #onInjectionError
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*/
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public static final int ERROR_INJECTION_SESSION = 0;
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/**
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* An error code that can be reported by {@link #onInjectionError} indicating that the
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* camera service has encountered a fatal error.
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*
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* <p>The Android device may need to be shut down and restarted to restore
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* camera function, or there may be a persistent hardware problem.</p>
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*
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* <p>An attempt at recovery <i>may</i> be possible by closing the
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* CameraDevice and the CameraManager, and trying to acquire all resources again from
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* scratch.</p>
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*
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* @see #onInjectionError
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*/
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public static final int ERROR_INJECTION_SERVICE = 1;
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/**
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* An error code that can be reported by {@link #onInjectionError} indicating that the
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* injection camera does not support certain camera functions. When this error occurs, the
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* default processing is still in the inject state, and the app is notified to display an
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* error message and a black screen.
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*
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* @see #onInjectionError
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*/
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public static final int ERROR_INJECTION_UNSUPPORTED = 2;
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/**
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* @hide
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*/
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@Retention(RetentionPolicy.SOURCE)
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@IntDef(prefix = {"ERROR_"}, value =
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{ERROR_INJECTION_SESSION,
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ERROR_INJECTION_SERVICE,
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ERROR_INJECTION_UNSUPPORTED})
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public @interface ErrorCode {};
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/**
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* The method will be called when an external camera has been injected and replaced
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* internal camera's feed.
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*
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* @param injectionSession The camera injection session that has been injected.
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*/
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public abstract void onInjectionSucceeded(
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@NonNull CameraInjectionSession injectionSession);
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/**
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* The method will be called when an error occurs in the injected external camera.
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*
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* @param errorCode The error code.
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* @see #ERROR_INJECTION_SESSION
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* @see #ERROR_INJECTION_SERVICE
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* @see #ERROR_INJECTION_UNSUPPORTED
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*/
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public abstract void onInjectionError(@NonNull int errorCode);
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}
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/**
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* To be inherited by android.hardware.camera2.* code only.
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*
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* @hide
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*/
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public CameraInjectionSession() {
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}
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}
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