Function lodepng_decode_file

depends/lodepng/lodepng.cpp:5014–5026

#ifdef LODEPNG_COMPILE_DISK
unsigned lodepng_decode_file(unsigned char** out, unsigned* w, unsigned* h, const char* filename,
                             LodePNGColorType colortype, unsigned bitdepth) {
  unsigned char* buffer = 0;
  size_t buffersize;
  unsigned error;
  /* safe output values in case error happens */
  *out = 0;
  *w = *h = 0;
  error = lodepng_load_file(&buffer, &buffersize, filename);
  if(!error) error = lodepng_decode_memory(out, w, h, buffer, buffersize, colortype, bitdepth);
  lodepng_free(buffer);
  return error;
}

unsigned lodepng_decode32_file(unsigned char** out, unsigned* w, unsigned* h, const char* filename) {
  return lodepng_decode_file(out, w, h, filename, LCT_RGBA, 8);