Function readChunk_pHYs

depends/lodepng/lodepng.cpp:4618–4627

}

static unsigned readChunk_pHYs(LodePNGInfo* info, const unsigned char* data, size_t chunkLength) {
  if(chunkLength != 9) return 74; /*invalid pHYs chunk size*/

  info->phys_defined = 1;
  info->phys_x = 16777216u * data[0] + 65536u * data[1] + 256u * data[2] + data[3];
  info->phys_y = 16777216u * data[4] + 65536u * data[5] + 256u * data[6] + data[7];
  info->phys_unit = data[8];

  return 0; /* OK */
}

static unsigned readChunk_gAMA(LodePNGInfo* info, const unsigned char* data, size_t chunkLength) {
  if(chunkLength != 4) return 96; /*invalid gAMA chunk size*/