Quelle  enc_jpeg_data.h   Sprache: C

// Copyright (c) the JPEG XL Project Authors. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#ifndef LIB_JXL_JPEG_ENC_JPEG_DATA_H_
#define LIB_JXL_JPEG_ENC_JPEG_DATA_H_

#include <jxl/memory_manager.h>

#include <cstdint>
#include <vector>

#include "lib/jxl/base/span.h"
#include "lib/jxl/base/status.h"
#include "lib/jxl/color_encoding_internal.h"
#include "lib/jxl/enc_params.h"
#include "lib/jxl/frame_header.h"
#include "lib/jxl/jpeg/jpeg_data.h"

namespace jxl {

class CodecInOut;

namespace jpeg {
Status EncodeJPEGData(JxlMemoryManager* memory_manager, JPEGData& jpeg_data,
                      std::vector<uint8_t>* bytes,
                      const CompressParams& cparams);

Status SetColorEncodingFromJpegData(const jpeg::JPEGData& jpg,
                                    ColorEncoding* color_encoding);
Status SetChromaSubsamplingFromJpegData(const JPEGData& jpg,
                                        YCbCrChromaSubsampling* cs);
Status SetColorTransformFromJpegData(const JPEGData& jpg,
                                     ColorTransform* color_transform);

/**
 * Decodes bytes containing JPEG codestream into a CodecInOut as coefficients
 * only, for lossless JPEG transcoding.
 */
Status DecodeImageJPG(Span<const uint8_t> bytes, CodecInOut* io);

}  // namespace jpeg
}  // namespace jxl

#endif  // LIB_JXL_JPEG_ENC_JPEG_DATA_H_