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 : mRangeOffset(0),
27 mInt32Data(0),
28 mOwnsData(true) {
29 mData = malloc(capacity);
30 if (mData == NULL) {
31 mCapacity = 0;
32 mRangeLength = 0;
33 } else {
34 mCapacity = capacity;
35 mRangeLength = capacity;
36 }
37 }
38
ABuffer(void * data,size_t capacity)39 ABuffer::ABuffer(void *data, size_t capacity)
40 : mData(data),
41 mCapacity(capacity),
42 mRangeOffset(0),
43 mRangeLength(capacity),
44 mInt32Data(0),
45 mOwnsData(false) {
46 }
47
48 // static
CreateAsCopy(const void * data,size_t capacity)49 sp<ABuffer> ABuffer::CreateAsCopy(const void *data, size_t capacity)
50 {
51 sp<ABuffer> res = new ABuffer(capacity);
52 if (res->base() == NULL) {
53 return NULL;
54 }
55 memcpy(res->data(), data, capacity);
56 return res;
57 }
58
~ABuffer()59 ABuffer::~ABuffer() {
60 if (mOwnsData) {
61 if (mData != NULL) {
62 free(mData);
63 mData = NULL;
64 }
65 }
66 }
67
setRange(size_t offset,size_t size)68 void ABuffer::setRange(size_t offset, size_t size) {
69 CHECK_LE(offset, mCapacity);
70 CHECK_LE(size, mCapacity - offset);
71
72 mRangeOffset = offset;
73 mRangeLength = size;
74 }
75
meta()76 sp<AMessage> ABuffer::meta() {
77 if (mMeta == NULL) {
78 mMeta = new AMessage;
79 }
80 return mMeta;
81 }
82
83 } // namespace android
84
85