/*
 * Copyright (C) 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 android.hardware.neuralnetworks@1.3;

import @1.2::IPreparedModelCallback;
import IPreparedModel;

/**
 * IPreparedModelCallback must be used to return a prepared model produced by an
 * asynchronous task launched from IDevice::prepareModel.
 */
interface IPreparedModelCallback extends @1.2::IPreparedModelCallback {

    /**
     * There are three notify methods declared for the IPreparedModelCallback
     * interface: notify_1_3, notify_1_2, and notify. One of the three
     * notify methods must be invoked immediately after the asynchronous
     * task holding this callback has finished preparing the model. If the model was
     * successfully prepared, one of the notify methods must be invoked with
     * ErrorStatus::NONE and the prepared model. If the model was not able to be
     * successfully prepared, one of the notify methods must be invoked with the
     * appropriate ErrorStatus and nullptr as the IPreparedModel. If the asynchronous
     * task holding this callback fails to launch or if the model provided to
     * IDevice::prepareModel is invalid, one of the notify methods must be invoked
     * with the appropriate error as well as nullptr for the IPreparedModel.
     *
     * @param status Error status returned from the asynchronous model
     *               preparation task; must be:
     *               - NONE if the asynchronous task successfully prepared the
     *                 model
     *               - DEVICE_UNAVAILABLE if driver is offline or busy
     *               - GENERAL_FAILURE if the asynchronous task resulted in an
     *                 unspecified error
     *               - INVALID_ARGUMENT if one of the input arguments to
     *                 prepareModel is invalid
     *               - MISSED_DEADLINE_* if the preparation is aborted because
     *                 the model cannot be prepared by the deadline
     *               - RESOURCE_EXHAUSTED_* if the task was aborted by the
     *                 driver
     * @param preparedModel A model that has been asynchronously prepared for
     *                      execution. If the model was unable to be prepared
     *                      due to an error, nullptr must be passed in place of
     *                      the IPreparedModel object.
     */
    oneway notify_1_3(ErrorStatus status, IPreparedModel preparedModel);
};