You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
93 lines
2.7 KiB
93 lines
2.7 KiB
4 months ago
|
/*
|
||
|
|
* Copyright (c) 2017, The Linux Foundation. All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions are
|
||
|
|
* met:
|
||
|
|
* * Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* * Redistributions in binary form must reproduce the above
|
||
|
|
* copyright notice, this list of conditions and the following
|
||
|
|
* disclaimer in the documentation and/or other materials provided
|
||
|
|
* with the distribution.
|
||
|
|
* * Neither the name of The Linux Foundation nor the names of its
|
||
|
|
* contributors may be used to endorse or promote products derived
|
||
|
|
* from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
|
||
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
|
||
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
|
||
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
|
||
|
|
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
|
||
|
|
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
|
||
|
|
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <dlfcn.h>
|
||
|
|
|
||
|
|
#include "drm_lib_loader.h"
|
||
|
|
|
||
|
|
#define __CLASS__ "DRMLibLoader"
|
||
|
|
|
||
|
|
using std::mutex;
|
||
|
|
using std::lock_guard;
|
||
|
|
|
||
|
|
namespace drm_utils {
|
||
|
|
|
||
|
|
DRMLibLoader *DRMLibLoader::s_instance = nullptr;
|
||
|
|
mutex DRMLibLoader::s_lock;
|
||
|
|
|
||
|
|
DRMLibLoader *DRMLibLoader::GetInstance() {
|
||
|
|
lock_guard<mutex> obj(s_lock);
|
||
|
|
|
||
|
|
if (!s_instance) {
|
||
|
|
s_instance = new DRMLibLoader();
|
||
|
|
}
|
||
|
|
|
||
|
|
return s_instance;
|
||
|
|
}
|
||
|
|
|
||
|
|
void DRMLibLoader::Destroy() {
|
||
|
|
lock_guard<mutex> obj(s_lock);
|
||
|
|
if (s_instance) {
|
||
|
|
delete s_instance;
|
||
|
|
s_instance = nullptr;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
DRMLibLoader::DRMLibLoader() {
|
||
|
|
if (Open("libsdedrm.so")) {
|
||
|
|
if (Sym("GetDRMManager", reinterpret_cast<void **>(&func_get_drm_manager_)) &&
|
||
|
|
Sym("DestroyDRMManager", reinterpret_cast<void **>(&func_destroy_drm_manager_))) {
|
||
|
|
is_loaded_ = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
DRMLibLoader::~DRMLibLoader() {
|
||
|
|
if (lib_) {
|
||
|
|
::dlclose(lib_);
|
||
|
|
lib_ = nullptr;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
bool DRMLibLoader::Open(const char *lib_name) {
|
||
|
|
lib_ = ::dlopen(lib_name, RTLD_NOW);
|
||
|
|
|
||
|
|
return (lib_ != nullptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
bool DRMLibLoader::Sym(const char *func_name, void **func_ptr) {
|
||
|
|
if (lib_) {
|
||
|
|
*func_ptr = ::dlsym(lib_, func_name);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (*func_ptr != nullptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace drm_utils
|