1 /*
2 * Copyright (C) 2010 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 #include "ABuffer.h"
18
19 #include "ADebug.h"
20 #include "ALooper.h"
21 #include "AMessage.h"
22
23 namespace android {
24
ABuffer(size_t capacity)25 ABuffer::ABuffer(size_t capacity)
26 : mData(malloc(capacity)),
27 mCapacity(capacity),
28 mRangeOffset(0),
29 mRangeLength(capacity),
30 mInt32Data(0),
31 mOwnsData(true) {
32 }
33
ABuffer(void * data,size_t capacity)34 ABuffer::ABuffer(void *data, size_t capacity)
35 : mData(data),
36 mCapacity(capacity),
37 mRangeOffset(0),
38 mRangeLength(capacity),
39 mInt32Data(0),
40 mOwnsData(false) {
41 }
42
~ABuffer()43 ABuffer::~ABuffer() {
44 if (mOwnsData) {
45 if (mData != NULL) {
46 free(mData);
47 mData = NULL;
48 }
49 }
50
51 if (mFarewell != NULL) {
52 mFarewell->post();
53 }
54 }
55
setRange(size_t offset,size_t size)56 void ABuffer::setRange(size_t offset, size_t size) {
57 CHECK_LE(offset, mCapacity);
58 CHECK_LE(offset + size, mCapacity);
59
60 mRangeOffset = offset;
61 mRangeLength = size;
62 }
63
setFarewellMessage(const sp<AMessage> msg)64 void ABuffer::setFarewellMessage(const sp<AMessage> msg) {
65 mFarewell = msg;
66 }
67
meta()68 sp<AMessage> ABuffer::meta() {
69 if (mMeta == NULL) {
70 mMeta = new AMessage;
71 }
72 return mMeta;
73 }
74
75 } // namespace android
76
77