1 /*
2 * Copyright (C) 2022 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 #include "raw_stream.h"
16 #include "image_log.h"
17
18 #undef LOG_DOMAIN
19 #define LOG_DOMAIN LOG_TAG_DOMAIN_ID_PLUGIN
20
21 #undef LOG_TAG
22 #define LOG_TAG "RawStream"
23
24 namespace OHOS {
25 namespace ImagePlugin {
26
RawStream(InputDataStream & sourceStream)27 RawStream::RawStream(InputDataStream &sourceStream)
28 {
29 IMAGE_LOGD("create IN");
30
31 inputStream_ = &sourceStream;
32
33 IMAGE_LOGD("create OUT");
34 }
35
~RawStream()36 RawStream::~RawStream()
37 {
38 IMAGE_LOGD("release IN");
39
40 inputStream_ = nullptr;
41
42 IMAGE_LOGD("release OUT");
43 }
44
45 // api for piex::StreamInterface
GetData(const size_t offset,const size_t length,uint8_t * data)46 piex::Error RawStream::GetData(const size_t offset, const size_t length, uint8_t* data)
47 {
48 if (inputStream_ == nullptr) {
49 IMAGE_LOGE("GetData, InputStream is null");
50 return piex::kUnsupported;
51 }
52
53 uint32_t u32Offset = static_cast<uint32_t>(offset);
54 uint32_t u32Length = static_cast<uint32_t>(length);
55
56 if (inputStream_->Tell() != u32Offset) {
57 if (!inputStream_->Seek(u32Offset)) {
58 IMAGE_LOGE("GetData, seek fail");
59 return piex::kFail;
60 }
61
62 if (inputStream_->Tell() != u32Offset) {
63 IMAGE_LOGE("GetData, seeked fail");
64 return piex::kFail;
65 }
66 }
67
68 uint32_t readSize = 0;
69 if (!inputStream_->Read(u32Length, data, u32Length, readSize)) {
70 IMAGE_LOGD("GetData, read fail");
71 return piex::kFail;
72 }
73
74 if (readSize != u32Length) {
75 IMAGE_LOGE("GetData, read want:%{public}u, real:%{public}u", u32Length, readSize);
76 return piex::kFail;
77 }
78
79 return piex::kOk;
80 }
81 } // namespace ImagePlugin
82 } // namespace OHOS
83