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 {
scanModules(const std::string & directory)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
getModule(const string & path)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