libjxl

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enc_jpeg_data.h (1314B)

      1 // Copyright (c) the JPEG XL Project Authors. All rights reserved.
      2 //
      3 // Use of this source code is governed by a BSD-style
      4 // license that can be found in the LICENSE file.
      5 
      6 #ifndef LIB_JXL_JPEG_ENC_JPEG_DATA_H_
      7 #define LIB_JXL_JPEG_ENC_JPEG_DATA_H_
      8 
      9 #include <cstdint>
     10 #include <vector>
     11 
     12 #include "lib/jxl/base/status.h"
     13 #include "lib/jxl/color_encoding_internal.h"
     14 #include "lib/jxl/enc_params.h"
     15 #include "lib/jxl/frame_header.h"
     16 #include "lib/jxl/jpeg/jpeg_data.h"
     17 
     18 namespace jxl {
     19 
     20 class CodecInOut;
     21 
     22 namespace jpeg {
     23 Status EncodeJPEGData(JPEGData& jpeg_data, std::vector<uint8_t>* bytes,
     24                       const CompressParams& cparams);
     25 
     26 void SetColorEncodingFromJpegData(const jpeg::JPEGData& jpg,
     27                                   ColorEncoding* color_encoding);
     28 Status SetChromaSubsamplingFromJpegData(const JPEGData& jpg,
     29                                         YCbCrChromaSubsampling* cs);
     30 Status SetColorTransformFromJpegData(const JPEGData& jpg,
     31                                      ColorTransform* color_transform);
     32 
     33 /**
     34  * Decodes bytes containing JPEG codestream into a CodecInOut as coefficients
     35  * only, for lossless JPEG transcoding.
     36  */
     37 Status DecodeImageJPG(Span<const uint8_t> bytes, CodecInOut* io);
     38 
     39 }  // namespace jpeg
     40 }  // namespace jxl
     41 
     42 #endif  // LIB_JXL_JPEG_ENC_JPEG_DATA_H_