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#include "MediaBufferBase.h"
23
24namespace android {
25
26ABuffer::ABuffer(size_t capacity)
27    : mMediaBufferBase(NULL),
28      mRangeOffset(0),
29      mInt32Data(0),
30      mOwnsData(true) {
31    mData = malloc(capacity);
32    if (mData == NULL) {
33        mCapacity = 0;
34        mRangeLength = 0;
35    } else {
36        mCapacity = capacity;
37        mRangeLength = capacity;
38    }
39}
40
41ABuffer::ABuffer(void *data, size_t capacity)
42    : mMediaBufferBase(NULL),
43      mData(data),
44      mCapacity(capacity),
45      mRangeOffset(0),
46      mRangeLength(capacity),
47      mInt32Data(0),
48      mOwnsData(false) {
49}
50
51// static
52sp<ABuffer> ABuffer::CreateAsCopy(const void *data, size_t capacity)
53{
54    sp<ABuffer> res = new ABuffer(capacity);
55    if (res->base() == NULL) {
56        return NULL;
57    }
58    memcpy(res->data(), data, capacity);
59    return res;
60}
61
62ABuffer::~ABuffer() {
63    if (mOwnsData) {
64        if (mData != NULL) {
65            free(mData);
66            mData = NULL;
67        }
68    }
69
70    setMediaBufferBase(NULL);
71}
72
73void ABuffer::setRange(size_t offset, size_t size) {
74    CHECK_LE(offset, mCapacity);
75    CHECK_LE(offset + size, mCapacity);
76
77    mRangeOffset = offset;
78    mRangeLength = size;
79}
80
81sp<AMessage> ABuffer::meta() {
82    if (mMeta == NULL) {
83        mMeta = new AMessage;
84    }
85    return mMeta;
86}
87
88MediaBufferBase *ABuffer::getMediaBufferBase() {
89    if (mMediaBufferBase != NULL) {
90        mMediaBufferBase->add_ref();
91    }
92    return mMediaBufferBase;
93}
94
95void ABuffer::setMediaBufferBase(MediaBufferBase *mediaBuffer) {
96    if (mMediaBufferBase != NULL) {
97        mMediaBufferBase->release();
98    }
99    mMediaBufferBase = mediaBuffer;
100}
101
102}  // namespace android
103
104