1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #define LOG_TAG "drm-vts-vendor-modules" 18 19 #include <dirent.h> 20 #include <dlfcn.h> 21 #include <log/log.h> 22 #include <memory> 23 #include <utils/String8.h> 24 #include <SharedLibrary.h> 25 26 #include "vendor_modules.h" 27 28 using std::string; 29 using std::vector; 30 using std::unique_ptr; 31 using ::android::String8; 32 using ::android::hardware::drm::V1_0::helper::SharedLibrary; 33 34 namespace drm_vts { 35 void VendorModules::scanModules(const std::string &directory) { 36 DIR* dir = opendir(directory.c_str()); 37 if (dir == NULL) { 38 ALOGE("Unable to open drm VTS vendor directory %s", directory.c_str()); 39 } else { 40 struct dirent* entry; 41 while ((entry = readdir(dir))) { 42 ALOGD("checking file %s", entry->d_name); 43 string fullpath = directory + "/" + entry->d_name; 44 if (endsWith(fullpath, ".so")) { 45 mPathList.push_back(fullpath); 46 } 47 } 48 closedir(dir); 49 } 50 } 51 52 DrmHalVTSVendorModule* VendorModules::getModule(const string& path) { 53 if (mOpenLibraries.find(path) == mOpenLibraries.end()) { 54 auto library = std::make_unique<SharedLibrary>(String8(path.c_str())); 55 if (!library) { 56 ALOGE("failed to map shared library %s", path.c_str()); 57 return NULL; 58 } 59 mOpenLibraries[path] = std::move(library); 60 } 61 const unique_ptr<SharedLibrary>& library = mOpenLibraries[path]; 62 void* symbol = library->lookup("vendorModuleFactory"); 63 if (symbol == NULL) { 64 ALOGE("getVendorModule failed to lookup 'vendorModuleFactory' in %s: " 65 "%s", path.c_str(), library->lastError()); 66 return NULL; 67 } 68 typedef DrmHalVTSVendorModule* (*ModuleFactory)(); 69 ModuleFactory moduleFactory = reinterpret_cast<ModuleFactory>(symbol); 70 return (*moduleFactory)(); 71 } 72 }; 73
