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/*
* 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*/
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