Function readPngData

source/core/StarImage.cpp:16–18

};

void readPngData(png_structp pngPtr, png_bytep data, png_size_t length) {
  ((IODevice*)png_get_io_ptr(pngPtr))->readFull((char*)data, length);
};

bool Image::isPng(IODevicePtr device) {
  png_byte header[8]{};