camera/provider/2.6/ICameraProviderCallback.hal

/*
 * Copyright (C) 2020 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.camera.provider@2.6;

import android.hardware.camera.common@1.0::types;
import android.hardware.camera.provider@2.4::ICameraProviderCallback;

/**
 * Callback functions for a camera provider HAL to use to inform the camera
 * service of changes to the camera subsystem.
 *
 * Version 2.6 adds support for physical camera device status callback for
 * multi-camera.
 */
interface ICameraProviderCallback extends @2.4::ICameraProviderCallback {

    /**
     * cameraPhysicalDeviceStatusChange:
     *
     * Callback to the camera service to indicate that the state of a physical
     * camera device of a logical multi-camera has changed.
     *
     * On camera service startup, when ICameraProvider::setCallback is invoked,
     * the camera service must assume that all physical devices backing internal
     * multi-camera devices are in the CAMERA_DEVICE_STATUS_PRESENT state.
     *
     * The provider must call this method to inform the camera service of any
     * initially NOT_PRESENT physical devices, as soon as the callbacks are available
     * through setCallback.
     *
     * @param cameraDeviceName The name of the logical multi-camera whose
     *     physical camera has a new status.
     * @param physicalCameraDeviceName The name of the physical camera device
     *     that has a new status.
     * @param newStatus The new status that device is in.
     *
     */
    physicalCameraDeviceStatusChange(string cameraDeviceName,
            string physicalCameraDeviceName, CameraDeviceStatus newStatus);
};