Function zlib_compress

depends/lodepng/lodepng.cpp:2293–2302

compress using the default or custom zlib function */

/* compress using the default or custom zlib function */
static unsigned zlib_compress(unsigned char** out, size_t* outsize, const unsigned char* in,
                              size_t insize, const LodePNGCompressSettings* settings) {
  if(settings->custom_zlib) {
    unsigned error = settings->custom_zlib(out, outsize, in, insize, settings);
    /*the custom zlib is allowed to have its own error codes, however, we translate it to code 111*/
    return error ? 111 : 0;
  } else {
    return lodepng_zlib_compress(out, outsize, in, insize, settings);
  }
}

#endif /*LODEPNG_COMPILE_ENCODER*/