1 /*
2  * Copyright 2014 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 #ifndef IMG_UTILS_SORTED_ENTRY_VECTOR_H
18 #define IMG_UTILS_SORTED_ENTRY_VECTOR_H
19 
20 #include <img_utils/TiffEntry.h>
21 
22 #include <utils/StrongPointer.h>
23 #include <utils/SortedVector.h>
24 
25 namespace android {
26 namespace img_utils {
27 
28 /**
29  * Subclass of SortedVector that has been extended to
30  * do comparisons/lookups based on the tag ID of the entries.
31  */
32 class SortedEntryVector : public SortedVector<sp<TiffEntry> > {
33     public:
34         virtual ~SortedEntryVector();
35 
36         /**
37          * Returns the index of the entry with the given tag ID, or
38          * -1 if none exists.
39          */
40         ssize_t indexOfTag(uint16_t tag) const;
41 
42     protected:
43         /**
44          * Compare tag ID.
45          */
46         virtual int do_compare(const void* lhs, const void* rhs) const;
47 };
48 
49 
50 } /*namespace img_utils*/
51 } /*namespace android*/
52 
53 #endif /*IMG_UTILS_SORTED_ENTRY_VECTOR_H*/
54