1 /*
2 * Copyright (C) 2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "buffer_source_stream.h"
17
18 #include <string>
19 #ifndef _WIN32
20 #include "securec.h"
21 #else
22 #include "memory.h"
23 #endif
24 #include "buffer_packer_stream.h"
25 #include "image_log.h"
26
27 #undef LOG_DOMAIN
28 #define LOG_DOMAIN LOG_TAG_DOMAIN_ID_IMAGE
29
30 #undef LOG_TAG
31 #define LOG_TAG "BufferSourceStream"
32
33 namespace OHOS {
34 namespace Media {
35 using namespace std;
36 using namespace ImagePlugin;
37
BufferSourceStream(uint8_t * data,uint32_t size,uint32_t offset,bool isUserBuffer)38 BufferSourceStream::BufferSourceStream(uint8_t *data, uint32_t size, uint32_t offset, bool isUserBuffer)
39 : inputBuffer_(data), dataSize_(size), dataOffset_(offset), isUserBuffer_(isUserBuffer)
40 {}
41
~BufferSourceStream()42 BufferSourceStream::~BufferSourceStream()
43 {
44 IMAGE_LOGD("[BufferSourceStream]destructor enter");
45 if (!isUserBuffer_ && inputBuffer_ != nullptr) {
46 free(inputBuffer_);
47 inputBuffer_ = nullptr;
48 }
49 }
50
CreateSourceStream(const uint8_t * data,uint32_t size,bool isUserBuffer)51 std::unique_ptr<BufferSourceStream> BufferSourceStream::CreateSourceStream(const uint8_t *data,
52 uint32_t size, bool isUserBuffer)
53 {
54 if ((data == nullptr) || (size == 0)) {
55 IMAGE_LOGE("[BufferSourceStream]input the parameter exception.");
56 return nullptr;
57 }
58 if (isUserBuffer) {
59 return make_unique<BufferSourceStream>(const_cast<uint8_t*> (data), size, 0, isUserBuffer);
60 }
61 uint8_t *dataCopy = static_cast<uint8_t *>(malloc(size));
62 if (dataCopy == nullptr) {
63 IMAGE_LOGE("[BufferSourceStream]malloc the input data buffer fail.");
64 return nullptr;
65 }
66 errno_t ret = memcpy_s(dataCopy, size, data, size);
67 if (ret != EOK) {
68 free(dataCopy);
69 dataCopy = nullptr;
70 IMAGE_LOGE("[BufferSourceStream]copy the input data fail, ret:%{public}d.", ret);
71 return nullptr;
72 }
73 return make_unique<BufferSourceStream>(dataCopy, size, 0, isUserBuffer);
74 }
75
Read(uint32_t desiredSize,DataStreamBuffer & outData)76 bool BufferSourceStream::Read(uint32_t desiredSize, DataStreamBuffer &outData)
77 {
78 if (!Peek(desiredSize, outData)) {
79 IMAGE_LOGE("[BufferSourceStream]read fail.");
80 return false;
81 }
82 dataOffset_.fetch_add(outData.dataSize);
83 return true;
84 }
85
Peek(uint32_t desiredSize,DataStreamBuffer & outData)86 bool BufferSourceStream::Peek(uint32_t desiredSize, DataStreamBuffer &outData)
87 {
88 if (desiredSize == 0) {
89 IMAGE_LOGE("[BufferSourceStream]input the parameter exception.");
90 return false;
91 }
92 size_t offset = dataOffset_.load();
93 if (dataSize_ == offset) {
94 IMAGE_LOGE("[BufferSourceStream]buffer read finish, offset:%{public}zu ,dataSize%{public}zu.",
95 offset, dataSize_);
96 return false;
97 }
98 outData.bufferSize = dataSize_ - offset;
99 if (desiredSize > dataSize_ - offset) {
100 desiredSize = dataSize_ - offset;
101 }
102 outData.dataSize = desiredSize;
103 outData.inputStreamBuffer = inputBuffer_ + offset;
104 IMAGE_LOGD("[BufferSourceStream]Peek end. desiredSize:%{public}d, offset:%{public}zu,"
105 "dataSize%{public}zu.", desiredSize, offset, dataSize_);
106 return true;
107 }
108
Read(uint32_t desiredSize,uint8_t * outBuffer,uint32_t bufferSize,uint32_t & readSize)109 bool BufferSourceStream::Read(uint32_t desiredSize, uint8_t *outBuffer, uint32_t bufferSize,
110 uint32_t &readSize) __attribute__((no_sanitize("cfi")))
111 {
112 if (!Peek(desiredSize, outBuffer, bufferSize, readSize)) {
113 IMAGE_LOGE("[BufferSourceStream]read fail.");
114 return false;
115 }
116 dataOffset_.fetch_add(readSize);
117 return true;
118 }
119
Peek(uint32_t desiredSize,uint8_t * outBuffer,uint32_t bufferSize,uint32_t & readSize)120 bool BufferSourceStream::Peek(uint32_t desiredSize, uint8_t *outBuffer, uint32_t bufferSize,
121 uint32_t &readSize) __attribute__((no_sanitize("cfi")))
122 {
123 if (desiredSize == 0 || outBuffer == nullptr || desiredSize > bufferSize) {
124 IMAGE_LOGE("[BufferSourceStream]input the parameter exception, desiredSize:%{public}u,"
125 "bufferSize:%{public}u.", desiredSize, bufferSize);
126 return false;
127 }
128 size_t offset = dataOffset_.load();
129 if (dataSize_ == offset) {
130 IMAGE_LOGE("[BufferSourceStream]buffer read finish, offset:%{public}zu ,dataSize%{public}zu.",
131 offset, dataSize_);
132 return false;
133 }
134 if (desiredSize > dataSize_ - offset) {
135 desiredSize = dataSize_ - offset;
136 }
137 errno_t ret = memcpy_s(outBuffer, bufferSize, inputBuffer_ + offset, desiredSize);
138 if (ret != EOK) {
139 IMAGE_LOGE("[BufferSourceStream]copy data fail, ret:%{public}d, bufferSize:%{public}u,"
140 "offset:%{public}zu, desiredSize:%{public}u.", ret, bufferSize, offset, desiredSize);
141 return false;
142 }
143 readSize = desiredSize;
144 return true;
145 }
146
Tell()147 uint32_t BufferSourceStream::Tell()
148 {
149 return dataOffset_.load();
150 }
151
Seek(uint32_t position)152 bool BufferSourceStream::Seek(uint32_t position)
153 {
154 if (position > dataSize_) {
155 IMAGE_LOGE("[BufferSourceStream]Seek the position greater than the Data Size,position:%{public}u.",
156 position);
157 return false;
158 }
159 dataOffset_.store(position);
160 return true;
161 }
162
GetStreamSize()163 size_t BufferSourceStream::GetStreamSize()
164 {
165 return dataSize_;
166 }
167
GetDataPtr()168 uint8_t *BufferSourceStream::GetDataPtr()
169 {
170 return inputBuffer_;
171 }
172
GetStreamType()173 uint32_t BufferSourceStream::GetStreamType()
174 {
175 return ImagePlugin::BUFFER_SOURCE_TYPE;
176 }
177
ToOutputDataStream()178 OutputDataStream* BufferSourceStream::ToOutputDataStream()
179 {
180 return new (std::nothrow) BufferPackerStream(inputBuffer_, dataSize_);
181 }
182 } // namespace Media
183 } // namespace OHOS
184