enc_jpeg_data.h (1438B)
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 <jxl/memory_manager.h> 10 11 #include <cstdint> 12 #include <vector> 13 14 #include "lib/jxl/base/span.h" 15 #include "lib/jxl/base/status.h" 16 #include "lib/jxl/color_encoding_internal.h" 17 #include "lib/jxl/enc_params.h" 18 #include "lib/jxl/frame_header.h" 19 #include "lib/jxl/jpeg/jpeg_data.h" 20 21 namespace jxl { 22 23 class CodecInOut; 24 25 namespace jpeg { 26 Status EncodeJPEGData(JxlMemoryManager* memory_manager, JPEGData& jpeg_data, 27 std::vector<uint8_t>* bytes, 28 const CompressParams& cparams); 29 30 Status SetColorEncodingFromJpegData(const jpeg::JPEGData& jpg, 31 ColorEncoding* color_encoding); 32 Status SetChromaSubsamplingFromJpegData(const JPEGData& jpg, 33 YCbCrChromaSubsampling* cs); 34 Status SetColorTransformFromJpegData(const JPEGData& jpg, 35 ColorTransform* color_transform); 36 37 /** 38 * Decodes bytes containing JPEG codestream into a CodecInOut as coefficients 39 * only, for lossless JPEG transcoding. 40 */ 41 Status DecodeImageJPG(Span<const uint8_t> bytes, CodecInOut* io); 42 43 } // namespace jpeg 44 } // namespace jxl 45 46 #endif // LIB_JXL_JPEG_ENC_JPEG_DATA_H_