/*
 * Copyright (C) 2017 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@1.0;

import IPreparedModel;

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

    /**
     * notify must be invoked immediately after the asynchronous task holding
     * this callback has finished preparing the model. If the model was
     * successfully prepared, notify must be invoked with ErrorStatus::NONE and
     * the prepared model. If the model was not able to be successfully
     * prepared, notify 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, notify 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
     * @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(ErrorStatus status, IPreparedModel preparedModel);
};