1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.mozglue;
import android.os.Parcel;
import org.mozilla.gecko.media.Sample;
import java.io.IOException;
import java.nio.ByteBuffer;
public final class SharedMemBuffer implements Sample.Buffer {
private SharedMemory mSharedMem;
/* package */
public SharedMemBuffer(SharedMemory sharedMem) {
mSharedMem = sharedMem;
}
protected SharedMemBuffer(Parcel in) {
mSharedMem = in.readParcelable(Sample.class.getClassLoader());
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeParcelable(mSharedMem, flags);
}
@Override
public int describeContents() {
return 0;
}
public static final Creator<SharedMemBuffer> CREATOR = new Creator<SharedMemBuffer>() {
@Override
public SharedMemBuffer createFromParcel(Parcel in) {
return new SharedMemBuffer(in);
}
@Override
public SharedMemBuffer[] newArray(int size) {
return new SharedMemBuffer[size];
}
};
@Override
public int capacity() {
return mSharedMem != null ? mSharedMem.getSize() : 0;
}
@Override
public void readFromByteBuffer(ByteBuffer src, int offset, int size) throws IOException {
if (!src.isDirect()) {
throw new IOException("SharedMemBuffer only support reading from direct byte buffer.");
}
nativeReadFromDirectBuffer(src, mSharedMem.getPointer(), offset, size);
}
private native static void nativeReadFromDirectBuffer(ByteBuffer src, long dest, int offset, int size);
@Override
public void writeToByteBuffer(ByteBuffer dest, int offset, int size) throws IOException {
if (!dest.isDirect()) {
throw new IOException("SharedMemBuffer only support writing to direct byte buffer.");
}
nativeWriteToDirectBuffer(mSharedMem.getPointer(), dest, offset, size);
}
private native static void nativeWriteToDirectBuffer(long src, ByteBuffer dest, int offset, int size);
@Override
public void dispose() {
if (mSharedMem != null) {
mSharedMem.dispose();
mSharedMem = null;
}
}
@Override public String toString() { return "Buffer: " + mSharedMem; }
}
|
