Function ZlibRecompress

leanify.cpp:207–239

size_t ZlibRecompress(void *src, size_t src_len, size_t size_leanified /*= 0*/)
{
    if (!is_fast)
    {
        size_t s = 0;
        uint8_t *buffer = static_cast<uint8_t *>(tinfl_decompress_mem_to_heap(src, src_len, &s, TINFL_FLAG_PARSE_ZLIB_HEADER));
        if (!buffer)
        {
            cerr << "Decompress Zlib data failed." << endl;
        }
        else
        {
            ZopfliOptions zopfli_options;
            ZopfliInitOptions(&zopfli_options);
            zopfli_options.numiterations = iterations;

            size_t new_size = 0;
            uint8_t *out_buffer = nullptr;
            ZopfliZlibCompress(&zopfli_options, buffer, s, &out_buffer, &new_size);
            mz_free(buffer);
            if (new_size < src_len)
            {
                memcpy(static_cast<uint8_t *>(src) - size_leanified, out_buffer, new_size);
                delete[] out_buffer;
                return new_size;
            }
            delete[] out_buffer;
        }
    }

    memmove(static_cast<uint8_t *>(src) - size_leanified, src, src_len);
    return src_len;
}