How To Change Deflate (not really an issue) about lodepng HOT 2 CLOSED

 unsigned CustomPNGDeflate(unsigned char** out, size_t* outsize,
   const unsigned char* in, size_t insize,
   const LodePNGCompressSettings* settings) {

  int compression_level = 12;
  struct libdeflate_compressor* compressor;
  compressor = libdeflate_alloc_compressor(compression_level);
  size_t allocsize = libdeflate_deflate_compress_bound(compressor, insize);
  (*out) = (unsigned char*)malloc(allocsize);
  (*outsize) = libdeflate_deflate_compress(compressor, in, insize, *out, allocsize);
  libdeflate_free_compressor(compressor);
  return 0;
}