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 "drm_hal_vendor_module_api.h"
27 #include "vendor_modules.h"
28
29 using std::string;
30 using std::vector;
31 using std::unique_ptr;
32 using ::android::String8;
33 using ::android::hardware::drm::V1_0::helper::SharedLibrary;
34
35 namespace drm_vts {
scanModules(const std::string & directory)36 void VendorModules::scanModules(const std::string &directory) {
37 DIR* dir = opendir(directory.c_str());
38 if (dir == NULL) {
39 ALOGE("Unable to open drm VTS vendor directory %s", directory.c_str());
40 } else {
41 struct dirent* entry;
42 while ((entry = readdir(dir))) {
43 ALOGD("checking file %s", entry->d_name);
44 string fullpath = directory + "/" + entry->d_name;
45 if (endsWith(fullpath, ".so")) {
46 mPathList.push_back(fullpath);
47 }
48 }
49 closedir(dir);
50 }
51 }
52
getModule(const string & path)53 DrmHalVTSVendorModule* VendorModules::getModule(const string& path) {
54 if (mOpenLibraries.find(path) == mOpenLibraries.end()) {
55 auto library = std::make_unique<SharedLibrary>(String8(path.c_str()));
56 if (!library) {
57 ALOGE("failed to map shared library %s", path.c_str());
58 return NULL;
59 }
60 mOpenLibraries[path] = std::move(library);
61 }
62 const unique_ptr<SharedLibrary>& library = mOpenLibraries[path];
63 void* symbol = library->lookup("vendorModuleFactory");
64 if (symbol == NULL) {
65 ALOGE("getVendorModule failed to lookup 'vendorModuleFactory' in %s: "
66 "%s", path.c_str(), library->lastError());
67 return NULL;
68 }
69 typedef DrmHalVTSVendorModule* (*ModuleFactory)();
70 ModuleFactory moduleFactory = reinterpret_cast<ModuleFactory>(symbol);
71 return (*moduleFactory)();
72 }
73
getModuleByName(const string & name)74 DrmHalVTSVendorModule* VendorModules::getModuleByName(const string& name) {
75 for (const auto &path : mPathList) {
76 auto module = getModule(path);
77 if (module->getServiceName() == name) {
78 return module;
79 }
80
81 }
82 return NULL;
83 }
84 };
85