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ccef37f7创建于 2025年1月7日历史提交
/*
 * Copyright (c) 2025 Huawei Device Co., Ltd.
 * 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.
 */

/* *
 * @addtogroup HdiUsb
 *
 * @brief Provides unified APIs for usb services to access usb drivers.
 *
 * A usb service can obtain a usb driver object or agent and then call APIs provided by this object or agent to
 * access different types of usb devices based on the usb IDs, thereby obtaining usb information,
 * subscribing to or unsubscribing from usb data, enabling or disabling a usb,
 * setting the usb data reporting mode, and setting usb options such as the accuracy and measurement range.
 *
 * @since 5.1
 */

/* *
 * @file IUsbInterface.idl
 *
 * @brief Declares the APIs provided by the usb module for obtaining usb information, subscribing to or
 * unsubscribing from usb data, enabling or disabling a usb, setting the usb data reporting mode,
 * and setting usb options such as the accuracy and measurement range.
 *
 * @since 5.1
 * @version 1.0
 */

package ohos.hdi.usb.v1_2;

import ohos.hdi.usb.v1_2.UsbTypes;
import ohos.hdi.usb.v1_2.IUsbdTransferCallback;
import ohos.hdi.usb.v1_1.UsbTypes;
import ohos.hdi.usb.v1_1.IUsbInterface;

/* *
 * @brief Defines the functions for performing basic operations on usb.
 *
 * The operations include obtaining usb information, subscribing to or unsubscribing from usb data,
 * enabling or disabling a usb, setting the usb data reporting mode, and setting usb options such as
 * the accuracy and measurement range.
 */
interface IUsbInterface extends ohos.hdi.usb.v1_1.IUsbInterface{

    /* *
     * @brief Submit usb async transfer.
     *
     * @param dev Indicates the USB device address.
     * @param info Indicates the param info of the USB transfer.
     * @param cb Indicates the callback function of base.
     * @param ashmem Indicates the object of share memory
     *
     * @return Returns <b>0</b> if the operation is successful; returns a non-0 value if the operation fails.
     * @since 5.1
     * @version 1.0
     */
    UsbSubmitTransfer([in] struct UsbDev dev, [in] USBTransferInfo info, [in] IUsbdTransferCallback cb, [in] Ashmem ashmem);
    
    /* *
     * @brief Cancels the usb async transfer by endpoint.
     *
     * @param dev Indicates the USB device address.
     * @param endpoint Indicates the endpoint address.
     *
     * @return Returns <b>0</b> if the operation is successful; returns a non-0 value if the operation fails.
     * @since 5.1
     * @version 1.0
     */
    UsbCancelTransfer([in] struct UsbDev dev, [in] int endpoint);
}