1 /*
2  * Copyright (C) 2024 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_ACCESSOR_INCLUDE_JPEG_EXIF_METADATA_ACCESSOR_H
17 #define FRAMEWORKS_INNERKITSIMPL_ACCESSOR_INCLUDE_JPEG_EXIF_METADATA_ACCESSOR_H
18 
19 #include <tuple>
20 
21 #include "abstract_exif_metadata_accessor.h"
22 #include "buffer_metadata_stream.h"
23 #include "data_buf.h"
24 #include "metadata_stream.h"
25 
26 namespace OHOS {
27 namespace Media {
28 class JpegExifMetadataAccessor : public AbstractExifMetadataAccessor {
29 public:
30     JpegExifMetadataAccessor(std::shared_ptr<MetadataStream> &stream);
31     ~JpegExifMetadataAccessor();
32 
33     virtual uint32_t Read() override;
34     bool ReadBlob(DataBuf &blob) override;
35     virtual uint32_t Write() override;
36     uint32_t WriteBlob(DataBuf &blob) override;
37 
38 private:
39     int FindNextMarker() const;
40     std::pair<std::array<byte, 2>, uint16_t> ReadSegmentLength(uint8_t marker) const;
41     DataBuf ReadNextSegment(byte marker);
42     bool GetExifEncodeBlob(uint8_t **dataBlob, uint32_t &size);
43     bool GetExifBlob(const DataBuf &blob, uint8_t **dataBlob, uint32_t &size);
44     bool WriteHeader(BufferMetadataStream &tempStream);
45     std::tuple<size_t, size_t> GetInsertPosAndMarkerAPP1();
46     bool WriteSegment(BufferMetadataStream &bufStream, uint8_t marker, const DataBuf &buf);
47     bool WriteTail(BufferMetadataStream &bufStream);
48     bool CopyRestData(BufferMetadataStream &bufStream);
49     bool WriteData(BufferMetadataStream &bufStream, uint8_t *dataBlob, uint32_t size);
50     bool UpdateExifMetadata(BufferMetadataStream &tempStream, uint8_t *dataBlob, uint32_t size);
51     uint32_t UpdateData(uint8_t *dataBlob, uint32_t size);
52 };
53 } // namespace Media
54 } // namespace OHOS
55 
56 #endif // FRAMEWORKS_INNERKITSIMPL_ACCESSOR_INCLUDE_JPEG_EXIF_METADATA_ACCESSOR_H