| /* |
| * Copyright 2018, The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| //#define LOG_NDEBUG 0 |
| #define LOG_TAG "StagefrightPluginLoader" |
| #include <utils/Log.h> |
| |
| #include <android-base/properties.h> |
| #include <dlfcn.h> |
| |
| #include "StagefrightPluginLoader.h" |
| |
| namespace android { |
| |
| /* static */ Mutex StagefrightPluginLoader::sMutex; |
| /* static */ std::unique_ptr<StagefrightPluginLoader> StagefrightPluginLoader::sInstance; |
| |
| namespace /* unnamed */ { |
| |
| constexpr const char kCCodecPluginPath[] = "libsfplugin_ccodec.so"; |
| |
| } // unnamed namespace |
| |
| StagefrightPluginLoader::StagefrightPluginLoader(const char *libPath) { |
| if (android::base::GetIntProperty("debug.stagefright.ccodec", 1) == 0) { |
| ALOGD("CCodec is disabled."); |
| return; |
| } |
| mLibHandle = dlopen(libPath, RTLD_NOW | RTLD_NODELETE); |
| if (mLibHandle == nullptr) { |
| ALOGD("Failed to load library: %s (%s)", libPath, dlerror()); |
| return; |
| } |
| mCreateCodec = (CodecBase::CreateCodecFunc)dlsym(mLibHandle, "CreateCodec"); |
| if (mCreateCodec == nullptr) { |
| ALOGD("Failed to find symbol: CreateCodec (%s)", dlerror()); |
| } |
| mCreateBuilder = (MediaCodecListBuilderBase::CreateBuilderFunc)dlsym( |
| mLibHandle, "CreateBuilder"); |
| if (mCreateBuilder == nullptr) { |
| ALOGD("Failed to find symbol: CreateBuilder (%s)", dlerror()); |
| } |
| mCreateInputSurface = (CodecBase::CreateInputSurfaceFunc)dlsym( |
| mLibHandle, "CreateInputSurface"); |
| if (mCreateInputSurface == nullptr) { |
| ALOGD("Failed to find symbol: CreateInputSurface (%s)", dlerror()); |
| } |
| } |
| |
| StagefrightPluginLoader::~StagefrightPluginLoader() { |
| if (mLibHandle != nullptr) { |
| ALOGV("Closing handle"); |
| dlclose(mLibHandle); |
| } |
| } |
| |
| CodecBase *StagefrightPluginLoader::createCodec() { |
| if (mLibHandle == nullptr || mCreateCodec == nullptr) { |
| ALOGD("Handle or CreateCodec symbol is null"); |
| return nullptr; |
| } |
| return mCreateCodec(); |
| } |
| |
| MediaCodecListBuilderBase *StagefrightPluginLoader::createBuilder() { |
| if (mLibHandle == nullptr || mCreateBuilder == nullptr) { |
| ALOGD("Handle or CreateBuilder symbol is null"); |
| return nullptr; |
| } |
| return mCreateBuilder(); |
| } |
| |
| PersistentSurface *StagefrightPluginLoader::createInputSurface() { |
| if (mLibHandle == nullptr || mCreateInputSurface == nullptr) { |
| ALOGD("Handle or CreateInputSurface symbol is null"); |
| return nullptr; |
| } |
| return mCreateInputSurface(); |
| } |
| |
| //static |
| const std::unique_ptr<StagefrightPluginLoader> &StagefrightPluginLoader::GetCCodecInstance() { |
| Mutex::Autolock _l(sMutex); |
| if (!sInstance) { |
| ALOGV("Loading library"); |
| sInstance.reset(new StagefrightPluginLoader(kCCodecPluginPath)); |
| } |
| return sInstance; |
| } |
| |
| } // namespace android |