66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
/*
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Copyright 2016-2023 melonDS team
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This file is part of melonDS.
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melonDS is free software: you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with melonDS. If not, see http://www.gnu.org/licenses/.
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*/
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#include "Utils.h"
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#include <string.h>
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namespace melonDS
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{
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std::pair<std::unique_ptr<u8[]>, u32> PadToPowerOf2(std::unique_ptr<u8[]>&& data, u32 len) noexcept
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{
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if (data == nullptr || len == 0)
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return {nullptr, 0};
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if ((len & (len - 1)) == 0)
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return {std::move(data), len};
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u32 newlen = 1;
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while (newlen < len)
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newlen <<= 1;
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auto newdata = std::make_unique<u8[]>(newlen);
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memcpy(newdata.get(), data.get(), len);
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data = nullptr;
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return {std::move(newdata), newlen};
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}
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std::pair<std::unique_ptr<u8[]>, u32> PadToPowerOf2(const u8* data, u32 len) noexcept
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{
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if (len == 0)
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return {nullptr, 0};
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u32 newlen = 1;
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while (newlen < len)
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newlen <<= 1;
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auto newdata = std::make_unique<u8[]>(newlen);
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memcpy(newdata.get(), data, len);
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return {std::move(newdata), newlen};
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}
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std::unique_ptr<u8[]> CopyToUnique(const u8* data, u32 len) noexcept
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{
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if (data == nullptr || len == 0)
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return nullptr;
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auto newdata = std::make_unique<u8[]>(len);
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memcpy(newdata.get(), data, len);
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return newdata;
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}
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} |