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      1 /*
      2  * Copyright (C) 2010 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 android.mtp;
     18 
     19 import android.annotation.UnsupportedAppUsage;
     20 import java.util.ArrayList;
     21 import java.util.List;
     22 
     23 /**
     24  * Encapsulates the ObjectPropList dataset used by the GetObjectPropList command.
     25  * The fields of this class are read by JNI code in android_media_MtpDatabase.cpp
     26  */
     27 
     28 class MtpPropertyList {
     29 
     30     // list of object handles (first field in quadruplet)
     31     private List<Integer> mObjectHandles;
     32     // list of object property codes (second field in quadruplet)
     33     private List<Integer> mPropertyCodes;
     34     // list of data type codes (third field in quadruplet)
     35     private List<Integer> mDataTypes;
     36     // list of long int property values (fourth field in quadruplet, when value is integer type)
     37     private List<Long> mLongValues;
     38     // list of long int property values (fourth field in quadruplet, when value is string type)
     39     private List<String> mStringValues;
     40 
     41     // Return value of this operation
     42     private int mCode;
     43 
     44     public MtpPropertyList(int code) {
     45         mCode = code;
     46         mObjectHandles = new ArrayList<>();
     47         mPropertyCodes = new ArrayList<>();
     48         mDataTypes = new ArrayList<>();
     49         mLongValues = new ArrayList<>();
     50         mStringValues = new ArrayList<>();
     51     }
     52 
     53     @UnsupportedAppUsage
     54     public void append(int handle, int property, int type, long value) {
     55         mObjectHandles.add(handle);
     56         mPropertyCodes.add(property);
     57         mDataTypes.add(type);
     58         mLongValues.add(value);
     59         mStringValues.add(null);
     60     }
     61 
     62     @UnsupportedAppUsage
     63     public void append(int handle, int property, String value) {
     64         mObjectHandles.add(handle);
     65         mPropertyCodes.add(property);
     66         mDataTypes.add(MtpConstants.TYPE_STR);
     67         mStringValues.add(value);
     68         mLongValues.add(0L);
     69     }
     70 
     71     public int getCode() {
     72         return mCode;
     73     }
     74 
     75     public int getCount() {
     76         return mObjectHandles.size();
     77     }
     78 
     79     public int[] getObjectHandles() {
     80         return mObjectHandles.stream().mapToInt(Integer::intValue).toArray();
     81     }
     82 
     83     public int[] getPropertyCodes() {
     84         return mPropertyCodes.stream().mapToInt(Integer::intValue).toArray();
     85     }
     86 
     87     public int[] getDataTypes() {
     88         return mDataTypes.stream().mapToInt(Integer::intValue).toArray();
     89     }
     90 
     91     public long[] getLongValues() {
     92         return mLongValues.stream().mapToLong(Long::longValue).toArray();
     93     }
     94 
     95     public String[] getStringValues() {
     96         return mStringValues.toArray(new String[0]);
     97     }
     98 }
     99