png_write_oFFs    913 3rdparty/libpng/pngpriv.h PNG_EXTERN void png_write_oFFs PNGARG((png_structp png_ptr,
png_write_oFFs    172 3rdparty/libpng/pngwrite.c       png_write_oFFs(png_ptr, info_ptr->x_offset, info_ptr->y_offset,