Home | History | Annotate | Download | only in default 
      1 /*
      2  * Copyright (C) 2018 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 #ifndef ANDROID_HARDWARE_AUDIO_EFFECT_AUDIO_BUFFER_MANAGER_H_
     18 #define ANDROID_HARDWARE_AUDIO_EFFECT_AUDIO_BUFFER_MANAGER_H_
     19 
     20 #include PATH(android/hardware/audio/effect/FILE_VERSION/types.h)
     21 
     22 #include <mutex>
     23 
     24 #include <android/hidl/memory/1.0/IMemory.h>
     25 #include <system/audio_effect.h>
     26 #include <utils/KeyedVector.h>
     27 #include <utils/RefBase.h>
     28 #include <utils/Singleton.h>
     29 
     30 using ::android::hardware::audio::effect::CPP_VERSION::AudioBuffer;
     31 using ::android::hidl::memory::V1_0::IMemory;
     32 
     33 namespace android {
     34 namespace hardware {
     35 namespace audio {
     36 namespace effect {
     37 namespace CPP_VERSION {
     38 namespace implementation {
     39 
     40 class AudioBufferWrapper : public RefBase {
     41    public:
     42     explicit AudioBufferWrapper(const AudioBuffer& buffer);
     43     virtual ~AudioBufferWrapper();
     44     bool init();
     45     audio_buffer_t* getHalBuffer() { return &mHalBuffer; }
     46 
     47    private:
     48     AudioBufferWrapper(const AudioBufferWrapper&) = delete;
     49     void operator=(AudioBufferWrapper) = delete;
     50 
     51     AudioBuffer mHidlBuffer;
     52     sp<IMemory> mHidlMemory;
     53     audio_buffer_t mHalBuffer;
     54 };
     55 
     56 }  // namespace implementation
     57 }  // namespace CPP_VERSION
     58 }  // namespace effect
     59 }  // namespace audio
     60 }  // namespace hardware
     61 }  // namespace android
     62 
     63 using ::android::hardware::audio::effect::CPP_VERSION::implementation::AudioBufferWrapper;
     64 
     65 namespace android {
     66 
     67 // This class needs to be in 'android' ns because Singleton macros require that.
     68 class AudioBufferManager : public Singleton<AudioBufferManager> {
     69    public:
     70     bool wrap(const AudioBuffer& buffer, sp<AudioBufferWrapper>* wrapper);
     71 
     72    private:
     73     friend class hardware::audio::effect::CPP_VERSION::implementation::AudioBufferWrapper;
     74 
     75     // Called by AudioBufferWrapper.
     76     void removeEntry(uint64_t id);
     77 
     78     std::mutex mLock;
     79     KeyedVector<uint64_t, wp<AudioBufferWrapper>> mBuffers;
     80 };
     81 
     82 }  // namespace android
     83 
     84 #endif  // ANDROID_HARDWARE_AUDIO_EFFECT_AUDIO_BUFFER_MANAGER_H_
     85