1 /*
2  * Copyright (C) 2023 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 #ifndef PLUGINS_COMMON_LIBS_IMAGE_LIBEXTPLUGIN_INCLUDE_EXT_STREAM_H
17 #define PLUGINS_COMMON_LIBS_IMAGE_LIBEXTPLUGIN_INCLUDE_EXT_STREAM_H
18 
19 #include <cstddef>
20 
21 #include "include/core/SkStream.h"
22 #include "input_data_stream.h"
23 #include "nocopyable.h"
24 
25 namespace OHOS {
26 namespace ImagePlugin {
27 class ExtStream : public SkStream, NoCopyable {
28 public:
29     ExtStream() = default;
30     explicit ExtStream(InputDataStream *stream);
~ExtStream()31     virtual ~ExtStream() override
32     {
33         stream_ = nullptr;
34     }
35 
36     size_t read(void *buffer, size_t size) override;
37     size_t peek(void *buffer, size_t size) const override;
38     size_t getLength() const override;
39     bool isAtEnd() const override;
40 private:
41     ImagePlugin::InputDataStream *stream_;
42 };
43 } // namespace ImagePlugin
44 } // namespace OHOS
45 
46 #endif // PLUGINS_COMMON_LIBS_IMAGE_LIBEXTPLUGIN_INCLUDE_EXT_STREAM_H
47