1 /*
2  * Copyright (C) 2020 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 package android.media;
18 
19 /**
20  * A shared file region.
21  *
22  * This type contains the required information to share a region of a file between processes over
23  * AIDL.
24  * An instance of this type represents a valid FD. For representing a null SharedFileRegion, use a
25  * @nullable SharedFileRegion.
26  * Primarily, this is intended for shared memory blocks.
27  *
28  * @hide
29  */
30 parcelable SharedFileRegion {
31     /** File descriptor of the region. Must be valid. */
32     ParcelFileDescriptor fd;
33     /** Offset, in bytes within the file of the start of the region. Must be non-negative. */
34     long offset;
35     /** Size, in bytes of the memory region. Must be non-negative. */
36     long size;
37     /** Whether the region is writeable. */
38     boolean writeable;
39 }
40