SharedRegionParcelable.h revision 5204d315c6c6f53188f8d1414dd1b55b6c90142b 
1/*
2 * Copyright 2016 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_AAUDIO_SHARED_REGION_PARCELABLE_H
18#define ANDROID_AAUDIO_SHARED_REGION_PARCELABLE_H
19
20#include <stdint.h>
21
22#include <sys/mman.h>
23#include <binder/Parcelable.h>
24
25#include <aaudio/AAudio.h>
26
27#include "binding/SharedMemoryParcelable.h"
28
29using android::status_t;
30using android::Parcel;
31using android::Parcelable;
32
33namespace aaudio {
34
35class SharedRegionParcelable : public Parcelable {
36public:
37    SharedRegionParcelable();
38    virtual ~SharedRegionParcelable();
39
40    void setup(int32_t sharedMemoryIndex, int32_t offsetInBytes, int32_t sizeInBytes);
41
42    virtual status_t writeToParcel(Parcel* parcel) const override;
43
44    virtual status_t readFromParcel(const Parcel* parcel) override;
45
46    aaudio_result_t resolve(SharedMemoryParcelable *memoryParcels, void **regionAddressPtr);
47
48    bool isFileDescriptorSafe(SharedMemoryParcelable *memoryParcels);
49
50    aaudio_result_t validate();
51
52    void dump();
53
54protected:
55    int32_t mSharedMemoryIndex = -1;
56    int32_t mOffsetInBytes     = 0;
57    int32_t mSizeInBytes       = 0;
58};
59
60} /* namespace aaudio */
61
62#endif //ANDROID_AAUDIO_SHARED_REGION_PARCELABLE_H
63