deflate.hpp

// ops/include/nk/ops/deflate.hpp
//
// In-tree RFC 1951 Deflate/Inflate, RFC 1950 ZLIB wrapper, and
// CRC-32 / Adler-32 checksums. Zero external dependencies.
//
// Shared compression primitives for image (PNG, TIFF) and runtime (MAT v7).
 
#pragma once
 
#include <cstddef>
#include <cstdint>
#include <vector>
 
namespace nk::ops {

std::uint32_t crc32(const std::uint8_t *data, std::size_t len);

std::uint32_t adler32(const std::uint8_t *data, std::size_t len);

std::vector<std::uint8_t> inflateRaw(const std::uint8_t *src, std::size_t len,
                                     std::size_t expectedSizeHint = 0);

std::vector<std::uint8_t> deflateRaw(const std::uint8_t *src, std::size_t len,
                                     int level = 6);

std::vector<std::uint8_t> zlibDecompress(const std::uint8_t *src, std::size_t len,
                                         std::size_t expectedSizeHint = 0);

std::vector<std::uint8_t> zlibCompress(const std::uint8_t *src, std::size_t len,
                                       int level = 6);
 
} // namespace nk::ops