jpegxl_codec.h

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// BSD 3-Clause License
// Copyright (c) 2021-2025, 🍀☀🌕🌥 🌊
// See the LICENSE file in the project root for full license information.
 
#ifndef PACS_ENCODING_COMPRESSION_JPEGXL_CODEC_HPP
#define PACS_ENCODING_COMPRESSION_JPEGXL_CODEC_HPP
 
#include "kcenon/pacs/encoding/compression/compression_codec.h"
 
namespace kcenon::pacs::encoding::compression {
 
class jpegxl_codec final : public compression_codec {
public:
    static constexpr std::string_view kTransferSyntaxUIDLossless =
        "1.2.840.10008.1.2.4.110";
 
    static constexpr std::string_view kTransferSyntaxUIDJPEGRecompression =
        "1.2.840.10008.1.2.4.111";
 
    static constexpr std::string_view kTransferSyntaxUIDLossy =
        "1.2.840.10008.1.2.4.112";
 
    static constexpr float kDefaultQualityDistance = 1.0f;
 
    explicit jpegxl_codec(bool lossless = true,
                          bool jpeg_recompression = false,
                          float quality_distance = kDefaultQualityDistance);
 
    ~jpegxl_codec() override;
 
    // Non-copyable but movable
    jpegxl_codec(const jpegxl_codec&) = delete;
    jpegxl_codec& operator=(const jpegxl_codec&) = delete;
    jpegxl_codec(jpegxl_codec&&) noexcept;
    jpegxl_codec& operator=(jpegxl_codec&&) noexcept;
 
 
    [[nodiscard]] std::string_view transfer_syntax_uid() const noexcept override;
    [[nodiscard]] std::string_view name() const noexcept override;
    [[nodiscard]] bool is_lossy() const noexcept override;
    [[nodiscard]] bool can_encode(const image_params& params) const noexcept override;
    [[nodiscard]] bool can_decode(const image_params& params) const noexcept override;
 
 
 
    [[nodiscard]] bool is_lossless_mode() const noexcept;
    [[nodiscard]] bool is_jpeg_recompression_mode() const noexcept;
    [[nodiscard]] float quality_distance() const noexcept;
 
 
 
    [[nodiscard]] codec_result encode(
        std::span<const uint8_t> pixel_data,
        const image_params& params,
        const compression_options& options = {}) const override;
 
    [[nodiscard]] codec_result decode(
        std::span<const uint8_t> compressed_data,
        const image_params& params) const override;
 
 
private:
    bool lossless_;
    bool jpeg_recompression_;
    float quality_distance_;
};
 
}  // namespace kcenon::pacs::encoding::compression
 
#endif  // PACS_ENCODING_COMPRESSION_JPEGXL_CODEC_HPP