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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.car.obd2.commands;
     18 
     19 import com.android.car.obd2.IntegerArrayStream;
     20 import com.android.car.obd2.Obd2Command;
     21 import java.util.Optional;
     22 
     23 public abstract class FuelTrimCommand implements Obd2Command.OutputSemanticHandler<Float> {
     24     @Override
     25     public Optional<Float> consume(IntegerArrayStream data) {
     26         return data.hasAtLeast(
     27                 1,
     28                 theData -> Optional.of(3 * theData.consume() / 1.28f - 100),
     29                 theData -> Optional.<Float>empty());
     30     }
     31 
     32     public static class Bank1ShortTermFuelTrimCommand extends FuelTrimCommand {
     33         @Override
     34         public int getPid() {
     35             return 0x06;
     36         }
     37     }
     38 
     39     public static class Bank1LongTermFuelTrimCommand extends FuelTrimCommand {
     40         @Override
     41         public int getPid() {
     42             return 0x07;
     43         }
     44     }
     45 
     46     public static class Bank2ShortTermFuelTrimCommand extends FuelTrimCommand {
     47         @Override
     48         public int getPid() {
     49             return 0x08;
     50         }
     51     }
     52 
     53     public static class Bank2LongTermFuelTrimCommand extends FuelTrimCommand {
     54         @Override
     55         public int getPid() {
     56             return 0x09;
     57         }
     58     }
     59 }
     60