/* * Copyright 2017 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. */ #ifndef OBOE_ENGINE_OPENSLES_H #define OBOE_ENGINE_OPENSLES_H #include #include #include #include namespace oboe { typedef SLresult (*prototype_slCreateEngine)( SLObjectItf *pEngine, SLuint32 numOptions, const SLEngineOption *pEngineOptions, SLuint32 numInterfaces, const SLInterfaceID *pInterfaceIds, const SLboolean *pInterfaceRequired ); /** * INTERNAL USE ONLY */ class EngineOpenSLES { public: static EngineOpenSLES &getInstance(); bool linkOpenSLES(); SLresult open(); void close(); SLresult createOutputMix(SLObjectItf *objectItf); SLresult createAudioPlayer(SLObjectItf *objectItf, SLDataSource *audioSource, SLDataSink *audioSink); SLresult createAudioRecorder(SLObjectItf *objectItf, SLDataSource *audioSource, SLDataSink *audioSink); SLInterfaceID getIidEngine() { return LOCAL_SL_IID_ENGINE; } SLInterfaceID getIidAndroidSimpleBufferQueue() { return LOCAL_SL_IID_ANDROIDSIMPLEBUFFERQUEUE; } SLInterfaceID getIidAndroidConfiguration() { return LOCAL_SL_IID_ANDROIDCONFIGURATION; } SLInterfaceID getIidRecord() { return LOCAL_SL_IID_RECORD; } SLInterfaceID getIidBufferQueue() { return LOCAL_SL_IID_BUFFERQUEUE; } SLInterfaceID getIidVolume() { return LOCAL_SL_IID_VOLUME; } SLInterfaceID getIidPlay() { return LOCAL_SL_IID_PLAY; } private: // Make this a safe Singleton EngineOpenSLES()= default; ~EngineOpenSLES()= default; EngineOpenSLES(const EngineOpenSLES&)= delete; EngineOpenSLES& operator=(const EngineOpenSLES&)= delete; SLInterfaceID getIidPointer(const char *symbolName); /** * Close the OpenSL ES engine. * This must be called under mLock */ void close_l(); std::mutex mLock; int32_t mOpenCount = 0; static constexpr int32_t kLinkStateUninitialized = 0; static constexpr int32_t kLinkStateGood = 1; static constexpr int32_t kLinkStateBad = 2; int32_t mDynamicLinkState = kLinkStateUninitialized; SLObjectItf mEngineObject = nullptr; SLEngineItf mEngineInterface = nullptr; // These symbols are loaded using dlsym(). prototype_slCreateEngine mFunction_slCreateEngine = nullptr; void *mLibOpenSlesLibraryHandle = nullptr; SLInterfaceID LOCAL_SL_IID_ENGINE = nullptr; SLInterfaceID LOCAL_SL_IID_ANDROIDSIMPLEBUFFERQUEUE = nullptr; SLInterfaceID LOCAL_SL_IID_ANDROIDCONFIGURATION = nullptr; SLInterfaceID LOCAL_SL_IID_RECORD = nullptr; SLInterfaceID LOCAL_SL_IID_BUFFERQUEUE = nullptr; SLInterfaceID LOCAL_SL_IID_VOLUME = nullptr; SLInterfaceID LOCAL_SL_IID_PLAY = nullptr; }; } // namespace oboe #endif //OBOE_ENGINE_OPENSLES_H