80 lines
3 KiB
C++
80 lines
3 KiB
C++
/*************************************************************************/
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/* bitfield_dynamic.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "bitfield_dynamic.h"
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#include "core/os/memory.h"
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#include <string.h>
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void BitFieldDynamic::copy_from(const BitFieldDynamic &p_source) {
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create(p_source.get_num_bits(), false);
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memcpy(_data, p_source.get_data(), p_source.get_num_bytes());
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}
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void BitFieldDynamic::create(uint32_t p_num_bits, bool p_blank) {
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// first delete any initial
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destroy();
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_num_bits = p_num_bits;
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if (p_num_bits) {
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_num_bytes = (p_num_bits / 8) + 1;
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_data = (uint8_t *)memalloc(_num_bytes);
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if (p_blank) {
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blank(false);
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}
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}
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}
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void BitFieldDynamic::destroy() {
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if (_data) {
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memfree(_data);
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_data = nullptr;
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}
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_num_bytes = 0;
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_num_bits = 0;
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}
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void BitFieldDynamic::blank(bool p_set_or_zero) {
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if (p_set_or_zero) {
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memset(_data, 255, _num_bytes);
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} else {
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memset(_data, 0, _num_bytes);
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}
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}
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void BitFieldDynamic::invert() {
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for (uint32_t n = 0; n < _num_bytes; n++) {
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_data[n] = ~_data[n];
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}
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}
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