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 #ifndef FRAMEWORKS_INNERKITSIMPL_STREAM_INCLUDE_INCREMENTAL_SOURCE_STREAM_H_ 17 #define FRAMEWORKS_INNERKITSIMPL_STREAM_INCLUDE_INCREMENTAL_SOURCE_STREAM_H_ 18 19 #include <cstdint> 20 #include <memory> 21 #include <vector> 22 #include "image/input_data_stream.h" 23 #include "image_type.h" 24 #include "source_stream.h" 25 26 namespace OHOS { 27 namespace Media { 28 class IncrementalSourceStream : public SourceStream { 29 public: 30 static std::unique_ptr<IncrementalSourceStream> CreateSourceStream(IncrementalMode mode); 31 ~IncrementalSourceStream() = default; 32 bool Read(uint32_t desiredSize, ImagePlugin::DataStreamBuffer &outData) override; 33 bool Read(uint32_t desiredSize, uint8_t *outBuffer, uint32_t bufferSize, uint32_t &readSize) override; 34 bool Peek(uint32_t desiredSize, ImagePlugin::DataStreamBuffer &outData) override; 35 bool Peek(uint32_t desiredSize, uint8_t *outBuffer, uint32_t bufferSize, uint32_t &readSize) override; 36 uint32_t Tell() override; 37 bool Seek(uint32_t position) override; 38 39 uint32_t UpdateData(const uint8_t *data, uint32_t size, bool isCompleted) override; 40 bool IsStreamCompleted() override; 41 size_t GetStreamSize() override; 42 43 private: 44 explicit IncrementalSourceStream(IncrementalMode mode); 45 IncrementalMode incrementalMode_; 46 bool isFinalize_; 47 std::vector<uint8_t> sourceData_; 48 size_t dataSize_ = 0; 49 size_t dataOffset_ = 0; 50 }; 51 } // namespace Media 52 } // namespace OHOS 53 54 #endif // FRAMEWORKS_INNERKITSIMPL_STREAM_INCLUDE_INCREMENTAL_SOURCE_STREAM_H_ 55