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/*
 * 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;

/**
 * IExecutionCallback must be used to return the error status result from an
 * execution asynchronously launched from IPreparedModel::execute.
 */
interface IExecutionCallback {

    /**
     * notify must be invoked immediately after the asynchronous task has
     * finished performing the execution. notify must be provided with the
     * ErrorStatus resulting from the execution. If the asynchronous task
     * is not launched, notify must be invoked with the appropriate error.
     *
     * @param status Error status returned from launching the asynchronous task
     *               (if the launch fails) or from the asynchronous task itself
     *               (if the launch succeeds). Must be:
     *               - NONE if the asynchronous execution was successful
     *               - DEVICE_UNAVAILABLE if driver is offline or busy
     *               - GENERAL_FAILURE if the asynchronous task resulted in an
     *                 unspecified error
     *               - OUTPUT_INSUFFICIENT_SIZE if provided output buffer is
     *                 not large enough to store the resultant values
     *               - INVALID_ARGUMENT if one of the input arguments to
     *                 prepareModel is invalid
     */
    oneway notify(ErrorStatus status);
};