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      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