| /* |
| * Copyright 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef IMG_UTILS_ORDERABLE |
| #define IMG_UTILS_ORDERABLE |
| |
| #include <cutils/compiler.h> |
| #include <stdint.h> |
| |
| namespace android { |
| namespace img_utils { |
| |
| #define COMPARE_DEF(op) \ |
| inline bool operator op (const Orderable& orderable) const; |
| |
| /** |
| * Subclasses of Orderable can be compared and sorted. This is |
| * intended to be used to create sorted arrays of TIFF entries |
| * and IFDs. |
| */ |
| class ANDROID_API Orderable { |
| public: |
| virtual ~Orderable(); |
| |
| /** |
| * Comparison operatotors are based on the value returned |
| * from this method. |
| */ |
| virtual uint32_t getComparableValue() const = 0; |
| |
| COMPARE_DEF(>) |
| COMPARE_DEF(<) |
| COMPARE_DEF(>=) |
| COMPARE_DEF(<=) |
| COMPARE_DEF(==) |
| COMPARE_DEF(!=) |
| }; |
| |
| #undef COMPARE_DEF |
| |
| } /*namespace img_utils*/ |
| } /*namespace android*/ |
| |
| #endif /*IMG_UTILS_ORDERABLE*/ |