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
17package android.mtp;
18
19/**
20 * Encapsulates the ObjectPropList dataset used by the GetObjectPropList command.
21 * The fields of this class are read by JNI code in android_media_MtpDatabase.cpp
22 */
23
24class MtpPropertyList {
25
26    // number of results returned
27    private int             mCount;
28    // maximum number of results
29    private final int       mMaxCount;
30    // result code for GetObjectPropList
31    public int              mResult;
32    // list of object handles (first field in quadruplet)
33    public final int[]      mObjectHandles;
34    // list of object propery codes (second field in quadruplet)
35    public final int[]      mPropertyCodes;
36    // list of data type codes (third field in quadruplet)
37    public final int[]     mDataTypes;
38    // list of long int property values (fourth field in quadruplet, when value is integer type)
39    public long[]     mLongValues;
40    // list of long int property values (fourth field in quadruplet, when value is string type)
41    public String[]   mStringValues;
42
43    // constructor only called from MtpDatabase
44    public MtpPropertyList(int maxCount, int result) {
45        mMaxCount = maxCount;
46        mResult = result;
47        mObjectHandles = new int[maxCount];
48        mPropertyCodes = new int[maxCount];
49        mDataTypes = new int[maxCount];
50        // mLongValues and mStringValues are created lazily since both might not be necessary
51    }
52
53    public void append(int handle, int property, int type, long value) {
54        int index = mCount++;
55        if (mLongValues == null) {
56            mLongValues = new long[mMaxCount];
57        }
58        mObjectHandles[index] = handle;
59        mPropertyCodes[index] = property;
60        mDataTypes[index] = type;
61        mLongValues[index] = value;
62    }
63
64    public void append(int handle, int property, String value) {
65        int index = mCount++;
66        if (mStringValues == null) {
67            mStringValues = new String[mMaxCount];
68        }
69        mObjectHandles[index] = handle;
70        mPropertyCodes[index] = property;
71        mDataTypes[index] = MtpConstants.TYPE_STR;
72        mStringValues[index] = value;
73    }
74
75    public void setResult(int result) {
76        mResult = result;
77    }
78}
79