1 /* 2 * Copyright (c) 2023 Shenzhen Kaihong DID 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 OHOS_HDI_CODEC_IMAGE_V1_0_CODECJPEGHELPER_H 17 #define OHOS_HDI_CODEC_IMAGE_V1_0_CODECJPEGHELPER_H 18 #include <cinttypes> 19 #include "v1_0/icodec_image_jpeg.h" 20 #include <memory> 21 namespace OHOS { 22 namespace HDI { 23 namespace Codec { 24 namespace Image { 25 namespace V1_0 { 26 class CodecJpegHelper { 27 public: 28 enum JpegMarker : int16_t { 29 SOF0 = 0xffc0, 30 DHT = 0xffc4, 31 SOI = 0xffd8, 32 EOI = 0xffd9, 33 SOS = 0xffda, 34 DQT = 0xffdb, 35 DRI = 0xffdd, 36 UNKNOWN = 0xffff 37 }; 38 explicit CodecJpegHelper() = default; 39 ~CodecJpegHelper() = default; 40 int32_t JpegAssemble(const struct CodecJpegDecInfo &decInfo, int8_t *buffer, int32_t fd); 41 bool DessambleJpeg(int8_t *buffer, size_t bufferLen, struct CodecJpegDecInfo &decInfo, 42 std::unique_ptr<int8_t[]> &compressBuffer, uint32_t &comBufLen); 43 44 private: 45 int32_t FindMarker(int8_t *start); 46 int32_t JpegDqtAssemble(const struct CodecJpegDecInfo &decInfo, int8_t *buffer, int32_t curPos); 47 int32_t JpegDriAssemble(const struct CodecJpegDecInfo &decInfo, int8_t *buffer, int32_t curPos); 48 int32_t JpegDhtAssemble(const struct CodecJpegDecInfo &decInfo, int8_t *buffer, int32_t curPos); 49 int32_t JpegDhtAssemble(const std::vector<CodecJpegHuffTable> &table, int8_t *buffer, int32_t curPos, 50 bool dc = true); 51 int32_t JpegSofAssemble(const struct CodecJpegDecInfo &decInfo, int8_t *buffer, int32_t curPos); 52 int32_t JpegSosAssemble(const struct CodecJpegDecInfo &decInfo, int8_t *buffer, int32_t curPos); 53 int32_t JpegDataAssemble(int8_t *buffer, int32_t curPos, int32_t fd); 54 int32_t DessambleSof(int8_t *buffer, struct CodecJpegDecInfo &decInfo); 55 int32_t DessambleSos(int8_t *buffer, struct CodecJpegDecInfo &decInfo); 56 int32_t DessambleCompressData(int8_t *buffer, std::unique_ptr<int8_t[]> &compressBuffer, uint32_t &comBufLen); 57 int32_t DessambleDqt(int8_t *buffer, struct CodecJpegDecInfo &decInfo); 58 int32_t DessambleDht(int8_t *buffer, struct CodecJpegDecInfo &decInfo); 59 int32_t PutInt16(int8_t *buffer, int32_t curPos, int16_t value); 60 int32_t PutInt8(int8_t *buffer, int32_t curPos, int8_t value); 61 int32_t GetInt8(int8_t *buffer); 62 int32_t GetInt16(int8_t *buffer); 63 private: 64 static constexpr int32_t MAX_BUFFER_LEN = 128; 65 }; 66 } 67 } 68 } 69 } 70 } 71 #endif // OHOS_HDI_CODEC_IMAGE_V1_0_CODECJPEGHELPER_H 72