1 /* 2 * Copyright (c) 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 #ifndef HDF_LOAD_VDI_H 17 #define HDF_LOAD_VDI_H 18 19 #include "hdf_base.h" 20 21 #ifdef __cplusplus 22 extern "C" { 23 #endif /* __cplusplus */ 24 25 struct HdfVdiBase { 26 uint32_t moduleVersion; 27 const char *moduleName; 28 int (*CreateVdiInstance)(struct HdfVdiBase *vdiBase); 29 int (*DestoryVdiInstance)(struct HdfVdiBase *vdiBase); 30 }; 31 32 struct HdfVdiObject { 33 uintptr_t dlHandler; 34 struct HdfVdiBase *vdiBase; 35 }; 36 37 #define HDF_INVALID_VERSION 0xFFFFFFFF 38 39 /* The parameter is the library name with a suffix */ 40 struct HdfVdiObject *HdfLoadVdi(const char *libName); 41 42 /* 43 * The caller needs to confirm whether the version number is expected, 44 * and ensure that the structure inside the vdi is the same as the structure to be converted, 45 * Otherwise, it may cause crash issues. 46 */ 47 uint32_t HdfGetVdiVersion(const struct HdfVdiObject *vdiObj); 48 49 void HdfCloseVdi(struct HdfVdiObject *vdiObj); 50 51 #define HDF_VDI_INIT(module) struct HdfVdiBase *hdfVdiDesc = (struct HdfVdiBase *)&(module) 52 53 #ifdef __cplusplus 54 } 55 #endif /* __cplusplus */ 56 57 #endif /* HDF_LOAD_VDI_H */ 58 59