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 #ifndef ANDROID_HARDWARE_EFFECT_BUFFER_HAL_HIDL_H
18 #define ANDROID_HARDWARE_EFFECT_BUFFER_HAL_HIDL_H
19 
20 #include PATH(android/hardware/audio/effect/FILE_VERSION/types.h)
21 #include <android/hidl/memory/1.0/IMemory.h>
22 #include <hidl/HidlSupport.h>
23 #include <media/audiohal/EffectBufferHalInterface.h>
24 #include <system/audio_effect.h>
25 
26 using android::hardware::hidl_memory;
27 using android::hidl::memory::V1_0::IMemory;
28 
29 namespace android {
30 namespace effect {
31 namespace CPP_VERSION {
32 
33 using namespace ::android::hardware::audio::effect::CPP_VERSION;
34 
35 class EffectBufferHalHidl : public EffectBufferHalInterface
36 {
37   public:
38     static status_t allocate(size_t size, sp<EffectBufferHalInterface>* buffer);
39     static status_t mirror(void* external, size_t size, sp<EffectBufferHalInterface>* buffer);
40 
41     virtual audio_buffer_t* audioBuffer();
42     virtual void* externalData() const;
43 
getSize()44     virtual size_t getSize() const override { return mBufferSize; }
45 
46     virtual void setExternalData(void* external);
47     virtual void setFrameCount(size_t frameCount);
48     virtual bool checkFrameCountChange();
49 
50     virtual void update();
51     virtual void commit();
52     virtual void update(size_t size);
53     virtual void commit(size_t size);
54 
hidlBuffer()55     const AudioBuffer& hidlBuffer() const { return mHidlBuffer; }
56 
57   private:
58     friend class EffectBufferHalInterface;
59 
60     static uint64_t makeUniqueId();
61 
62     const size_t mBufferSize;
63     bool mFrameCountChanged;
64     void* mExternalData;
65     AudioBuffer mHidlBuffer;
66     sp<IMemory> mMemory;
67     audio_buffer_t mAudioBuffer;
68 
69     // Can not be constructed directly by clients.
70     explicit EffectBufferHalHidl(size_t size);
71 
72     virtual ~EffectBufferHalHidl();
73 
74     status_t init();
75 };
76 
77 } // namespace CPP_VERSION
78 } // namespace effect
79 } // namespace android
80 
81 #endif // ANDROID_HARDWARE_EFFECT_BUFFER_HAL_HIDL_H
82