74 lines
1.8 KiB
C++
74 lines
1.8 KiB
C++
/*
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* This file is part of RawTherapee.
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*
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* Copyright (c) 2016 Ingo Weyrich <heckflosse67@gmx.de>
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* Copyright (c) 2016 Adam Reichold <adam.reichold@t-online.de>
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*
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* RawTherapee is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* RawTherapee is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with RawTherapee. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <cstring>
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#include "noncopyable.h"
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namespace rtengine
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{
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// These emulate a jagged array, but use only 2 allocations instead of 1 + H.
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template<typename T>
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class JaggedArray :
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public NonCopyable
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{
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public:
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JaggedArray(std::size_t width, std::size_t height, bool init_zero = false) :
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array(
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[width, height, init_zero]() -> T**
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{
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T** const res = new T*[height];
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res[0] = new T[height * width];
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for (std::size_t i = 1; i < height; ++i) {
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res[i] = res[i - 1] + width;
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}
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if (init_zero) {
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std::memset(res[0], 0, sizeof(T) * width * height);
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}
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return res;
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}()
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)
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{
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}
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~JaggedArray ()
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{
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delete[] array[0];
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delete[] array;
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}
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operator T** ()
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{
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return array;
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}
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private:
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T** const array;
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};
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} // rtengine
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