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Diffstat (limited to 'source/application/main/include/DataStructures.hpp')
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1 files changed, 132 insertions, 0 deletions
diff --git a/source/application/main/include/DataStructures.hpp b/source/application/main/include/DataStructures.hpp new file mode 100644 index 0000000..5cc8b5e --- /dev/null +++ b/source/application/main/include/DataStructures.hpp @@ -0,0 +1,132 @@ +/* + * Copyright (c) 2021 Arm Limited. All rights reserved. + * SPDX-License-Identifier: Apache-2.0 + * + * 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 DATA_STRUCTURES_HPP +#define DATA_STRUCTURES_HPP + +#include "hal.h" + +#include <iterator> + +namespace arm { +namespace app { + + /** + * Class Array2d is a data structure that represents a two dimensional array. + * The data is allocated in contiguous memory, arranged row-wise + * and individual elements can be accessed with the () operator. + * For example a two dimensional array D of size (M, N) can be accessed: + * + * _|<------------- col size = N -------->| + * | D(r=0, c=0) D(r=0, c=1)... D(r=0, c=N) + * | D(r=1, c=0) D(r=1, c=1)... D(r=1, c=N) + * | ... + * row size = M ... + * | ... + * _ D(r=M, c=0) D(r=M, c=1)... D(r=M, c=N) + * + */ + template<typename T> + class Array2d { + public: + /** + * @brief Creates the array2d with the given sizes. + * @param[in] rows Number of rows. + * @param[in] cols Number of columns. + */ + Array2d(unsigned rows, unsigned cols) + { + if (rows == 0 || cols == 0) { + printf_err("Array2d constructor has 0 size.\n"); + _m_data = nullptr; + return; + } + _m_rows = rows; + _m_cols = cols; + _m_data = new T[rows * cols]; + } + + ~Array2d() + { + delete[] _m_data; + } + + T& operator() (unsigned int row, unsigned int col) + { +#if defined(DEBUG) + if (row >= _m_rows || col >= _m_cols || _m_data == nullptr) { + printf_err("Array2d subscript out of bounds.\n"); + } +#endif /* defined(DEBUG) */ + return _m_data[_m_cols * row + col]; + } + + T operator() (unsigned int row, unsigned int col) const + { +#if defined(DEBUG) + if (row >= _m_rows || col >= _m_cols || _m_data == nullptr) { + printf_err("const Array2d subscript out of bounds.\n"); + } +#endif /* defined(DEBUG) */ + return _m_data[_m_cols * row + col]; + } + + /** + * @brief Gets rows number of the current array2d. + * @return Number of rows. + */ + size_t size(size_t dim) + { + switch (dim) + { + case 0: + return _m_rows; + case 1: + return _m_cols; + default: + return 0; + } + } + + /** + * @brief Gets the array2d total size. + */ + size_t totalSize() + { + return _m_rows * _m_cols; + } + + /** + * array2d iterator. + */ + using iterator=T*; + using const_iterator=T const*; + + iterator begin() { return _m_data; } + iterator end() { return _m_data + totalSize(); } + const_iterator begin() const { return _m_data; } + const_iterator end() const { return _m_data + totalSize(); }; + + private: + size_t _m_rows; + size_t _m_cols; + T* _m_data; + }; + +} /* namespace app */ +} /* namespace arm */ + +#endif /* DATA_STRUCTURES_HPP */
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