1 /* 2 * Copyright (c) 2021-2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 /** 17 * @addtogroup DriverHdi 18 * @{ 19 * 20 * @brief Provides APIs for a system ability to obtain hardware device interface (HDI) services, 21 * load or unload a device, and listen for service status, and capabilities for the hdi-gen tool to 22 * automatically generate code in the interface description language (IDL). 23 * 24 * The HDF and the IDL code generated allow system abilities to access the HDI driver service. 25 * 26 * @since 1.0 27 */ 28 29 /** 30 * @file servstat_listener_hdi.h 31 * 32 * @brief Defines the data structs and interface types related to service status listening based on C. 33 * 34 * @since 1.0 35 */ 36 37 #ifndef HDI_SERVICE_STATUS_LISTENER_INF_H 38 #define HDI_SERVICE_STATUS_LISTENER_INF_H 39 40 #include "hdf_types.h" 41 #include "hdf_service_status.h" 42 43 #ifdef __cplusplus 44 extern "C" { 45 #endif /* __cplusplus */ 46 /** 47 * @brief Creates an HDI service status listener object. You can set the function for receiving the service status 48 * and use <b>RegisterServiceStatusListener()</b> to register the listener object. 49 * 50 * @return Returns the pointer to the listener object created. 51 */ 52 53 struct ServiceStatusListener *HdiServiceStatusListenerNewInstance(void); 54 /** 55 * @brief Releases an HDI service status listener object. 56 * 57 * @param listener Indicates the pointer to the listener object to release. 58 */ 59 void HdiServiceStatusListenerFree(struct ServiceStatusListener *listener); 60 61 #ifdef __cplusplus 62 } 63 #endif /* __cplusplus */ 64 65 #endif /* HDI_SERVICE_STATUS_LISTENER_INF_H */ 66