1 /*
2  * Copyright (C) 2022 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 #pragma once
18 
19 #include <aidl/android/hardware/common/Ashmem.h>
20 
21 #include <media/audiohal/EffectBufferHalInterface.h>
22 #include <system/audio_effect.h>
23 
24 namespace android {
25 namespace effect {
26 
27 class EffectBufferHalAidl : public EffectBufferHalInterface {
28   public:
29     static status_t allocate(size_t size, sp<EffectBufferHalInterface>* buffer);
30     static status_t mirror(void* external, size_t size, sp<EffectBufferHalInterface>* buffer);
31 
32     audio_buffer_t* audioBuffer() override;
33     void* externalData() const override;
34 
getSize()35     size_t getSize() const override { return mBufferSize; }
36 
37     void setExternalData(void* external) override;
38     void setFrameCount(size_t frameCount) override;
39     bool checkFrameCountChange() override;
40 
41     void update() override;
42     void commit() override;
43     void update(size_t size) override;
44     void commit(size_t size) override;
45 
46   private:
47     friend class EffectBufferHalInterface;
48 
49     // buffer size in bytes
50     const size_t mBufferSize;
51     bool mFrameCountChanged;
52     void* mExternalData;
53     audio_buffer_t mAudioBuffer;
54 
55     // Can not be constructed directly by clients.
56     explicit EffectBufferHalAidl(size_t size);
57 
58     ~EffectBufferHalAidl();
59     void copy(void* dst, const void* src, size_t n) const;
60     status_t init();
61 };
62 
63 } // namespace effect
64 } // namespace android
65