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 23namespace android { 24 25ABuffer::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 39ABuffer::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 49sp<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 59ABuffer::~ABuffer() { 60 if (mOwnsData) { 61 if (mData != NULL) { 62 free(mData); 63 mData = NULL; 64 } 65 } 66} 67 68void ABuffer::setRange(size_t offset, size_t size) { 69 CHECK_LE(offset, mCapacity); 70 CHECK_LE(offset + size, mCapacity); 71 72 mRangeOffset = offset; 73 mRangeLength = size; 74} 75 76sp<AMessage> ABuffer::meta() { 77 if (mMeta == NULL) { 78 mMeta = new AMessage; 79 } 80 return mMeta; 81} 82 83} // namespace android 84 85